April 15, 2021 Derek Chauvin trial day 14 news | CNN

Derek Chauvin is on trial for George Floyd’s death

laura coates carbon monoxide issue
'The prosecution made a mistake': Coates explains carbon monoxide issue
02:23 - Source: CNN

What we're covering here

  • Closing arguments are set for Monday. The defense and state rested their cases in the trial of ex-Minneapolis police officer Derek Chauvin.
  • The jury will begin deliberations after closing arguments.
  • Chauvin is charged with second-degree unintentional murder, third-degree murder and second-degree manslaughter in the death of George Floyd.
  • Floyd died in May 2020 after Chauvin placed his knee on Floyd’s neck while he pleaded, “I can’t breathe.”

Our live coverage of today’s testimony has ended. You can read more about today’s court proceedings here.

17 Posts

Here's what happened on the last day of witness testimony in Chauvin's trial

A lot happened in the trial of ex-Minneapolis police officer Derek Chauvin today: The judge denied the prosecution’s request to present “new evidence,” both sides rested and the jury went into recess for a long weekend.

If you’re just reading in now, here’s how the morning unfolded:

  • Chauvin chose not to testify: At the start of court proceedings today, Chauvin said he would invoke his Fifth Amendment right and would not testify in his own defense.  Chauvin told the court he understood he had the option to testify, but will not. 
  • The prosecution’s request was denied: Judge Peter Cahill rejected a prosecution request to present “new evidence” during a rebuttal case of “blood gas readings” regarding carbon monoxide levels found in George Floyd’s blood. The judge reached a compromise with the prosecution, saying they could discuss Floyd’s oxygen levels instead — but said if prosecutors brought up the test results at all, a mistrial would be ruled.
  • The prosecutor’s witness was on a “short leash” in rebuttal testimony: The prosecution called Dr. Martin Tobin, a pulmonologist, as a rebuttal witness to rebut the testimony of defense expert witness Dr. David Fowler, a retired forensic pathologist. During the testimony, Tobin said Fowler was “simply wrong” on Floyd’s carbon monoxide level. CNN legal analyst Laura Coates explained Tobin was “on the shortest, tightest leash possible” to ensure the judge did not declare a mistrial.
  • Both sides rested: Following the rebuttal testimony, both the defense and prosecution rested. Judge Cahill said closing arguments would begin on Monday, and adjourned the trial for a long weekend. The jury will be back at 10 a.m. ET Monday.

Trial has adjourned until Monday morning

After a dramatic morning in the trial of Derek Chauvin, the prosecution and defense have rested. The jury returns on Monday at 10 a.m. ET.

Defense and prosecution rest in the trial of Derek Chauvin

Following the rebuttal testimony from Dr. Martin Tobin, a pulmonologist, both the defense and prosecution rested.

Closing arguments are set for Monday.

Pulmonologist cross-examined by the defense

Dr. Martin Tobin testifies on Thursday, April 15.

Dr. Martin Tobin, a pulmonologist, said during rebuttal testimony that the opinion of defense expert witness Dr. David Fowler regarding George Floyd’s potential level of carbon monoxide in his blood was “simply wrong.”

He was just cross-examined by the defense.

CNN analyst: Jury was not present during conversation about new carbon monoxide test evidence 

The jury was not present during discussion about the prosecution potentially introducing new evidence about George Floyd’s carbon monoxide blood levels, legal analyst Laura Coates explained. Judge Peter Cahill ruled that the prosecution cannot use this new evidence in their rebuttal case.

“That seed of reasonable doubt has not been planted,” she said.

The judge reached a compromise with the prosecution that they can discuss George Floyd’s oxygen levels instead, but they cannot bring up the test results at all or a mistrial will be ruled.

“Judges don’t want to give the prosecutors two bites at the apple. They don’t want redundant testimony. If you could have raised it earlier, you should have, you had the chance, sit down. This time the prosecution is saying that when Dr. Fowler raised the issue of carbon monoxide poisoning, and although we had some semblance of what the theory might be, you presented some new theories, ‘So, we’re not asking for a second bite of the apple, Your Honor, we want a first bite of at the apple based on this new theory.’ The problem is the prosecution made a mistake. They did not take seriously the thought of carbon monoxide poisoning as potentially being a viable claim to be raised by this doctor. They may have overlooked the data and did not present it through their own witnesses to rebut and preempt this,” Coates continued.

Pulmonologist says defense witness is "simply wrong" on Floyd’s carbon monoxide level

Dr. Martin Tobin, left, testifies on Thursday, April 15. Dr. David Fowler, right, testifies on April 14.

Dr. Martin Tobin, a pulmonologist, said during rebuttal testimony that the opinion of defense expert witness Dr. David Fowler regarding George Floyd’s potential level of carbon monoxide in his blood was “simply wrong.”

Tobin said medical records showed Floyd’s oxygen saturation was 98% when he died. Prosecutor Jerry Blackwell asked him: “Does that tell us anything whatsoever about what the carbon monoxide content could have been at a maximum?” 

Tobin said: “Yes, it does. It tells us that if hemoglobin is saturated at 98%, it has – for others is 2%. So the maximum amount of carbon monoxide would be 2%.” 

Why this is important: Dr. Fowler testified that it was possible that carbon monoxide ingestion could have been one of the causes of Floyd’s death. He based this on observations of Floyd being pinned on the ground near the tailpipe of the police cruiser that officers were trying to get him into. Fowler acknowledged that he had not seen any data on Floyd’s carbon monoxide levels prior to testifying.

During his testimony Fowler said that it was his opinion that Floyd’s carbon monoxide levels in his blood could have increased by 10% to 15%. Tobin said that assessment is “simply wrong.”

Watch:

f61805a6-bca0-4801-8d1b-0046d34bd673.mp4
02:27 - Source: CNN

Dr. Tobin has to be "on the shortest, tightest leash possible" to prevent a mistrial, CNN analyst says

As the prosecution recalled Dr. Martin Tobin as a rebuttal witness at the Chauvin trial, CNN legal analyst Laura Coates says the pulmonologist will have to be on the “on the shortest, tightest leash possible” to ensure the judge does not declare a mistrial.

Tobin previously testified that it was his opinion that George Floyd died from low oxygen levels, and he will now be rebutting the testimony of defense expert witness Dr. David Fowler, a retired forensic pathologist.

“The judge has been very clear he will declare a mistrial because any hint, any suggestion or mention of the Hennepin County data will be prejudicial to a defendant who gave notice through their witness expert about a theory of carbon monoxide poisoning. And they did not have the data disclosed to them in time to be able to potentially fully flush it out or to recoil on their own theory,” Coates explained.

She added:

“Appellate courts have no tolerance for prosecutors who do not disclose information in a timely fashion and try to get it through a rebuttal witness. And so, this prosecution team is going to have to be extraordinarily prudent. And I hope that this witness, as informative as he is, can stay ton that leash.”

The risk is that witnesses can be like wild cards, just like jurors, Coates explained.

“I don’t care if you are the most seasoned expert testifying witness. Sometimes they do not understand the implications of their slip-ups or making a statement … Defense attorneys are always on guard with this very point,” she said. “In the event of a conviction, they want to have their ducks in a row of how they can seek an appeal to overturn based on, especially, prosecutorial misconduct or any allegations based on that.”

The prosecution recalls pulmonologist as a rebuttal witness

Dr. Martin Tobin testifies on Thursday, April 15.

The prosecution has called Dr. Martin Tobin, a pulmonologist, as a rebuttal witness at the Chauvin trial.

Tobin is rebutting the testimony of defense expert witness Dr. David Fowler, a retired forensic pathologist.

Tobin previously testified that it was his opinion that George Floyd died from low oxygen levels.

The defense rests its case

Defense attorney Eric Nelson just rested the defense’s case in the Derek Chauvin murder trial.

Prior to that, Chauvin declared in court that he would invoke his Fifth Amendment privilege and not testify.

What happens next: The prosecution is expected to call one rebuttal witness today.

Judge says he will declare a mistrial if prosecution witness "even mentions" carbon monoxide blood tests

After the defense rests its case, Judge Peter Cahill will allow the prosecution to call a witness to rebut some of the testimony by defense expert witness, Dr. David Fowler. But the judge said that he will limit what the witness can testify about.

During a court proceeding this morning prior to the jury coming in, both sides argued over the rebuttal testimony.

Prosecutor Jerry Blackwell told the judge that the prosecution had new evidence to present regarding carbon monoxide in George Floyd’s blood. Yesterday, Dr. Fowler, a retired forensic pathologist, said it was possible that carbon monoxide ingestion from the tailpipe of the car that Floyd was pinned on the ground near could have contributed to his death.

Defense attorney Eric Nelson said he opposed allowing the prosecution to present this evidence and call its rebuttal witness. Nelson argued that the disclosure of these new test results was untimely. He said that he only received the information last night after court had wrapped for the day.

The prosecution indicated in court that the witness they will call to rebut Fowler’s testimony is Dr. Martin Tobin, a pulmonologist that testified at trial that Floyd died of “low oxygen levels.”

The judge ruled that Tobin can testify however, he is not allowed to tell the jury about the test results. He said that any mention of these records will result in a mistrial.

Chauvin just invoked his Fifth Amendment right. Here's what the Constitution says.

Moments ago, Derek Chauvin told the court he would not testify in his own defense in the George Floyd murder trial. 

Chauvin invoked his Fifth Amendment right when he chose not to testify.

According to the White House, the Fifth Amendment “provides that citizens not be subject to criminal prosecution and punishment without due process.”

Here’s the full amendment:

Why Derek Chauvin may not want to testify, according to a CNN analyst

Ex-Minneapolis Police officer Derek Chauvin just said he will invoke the Fifth Amendment and not testify at his murder trial.

The defense also does not have the burden of proof, she added.

“He never had the burden to prove his innocence. It always remained with the prosecution. And now, the jury will be instructed, per his request, that they are not to draw any inference from his decision not to testify,” Coates explained.

Chauvin chooses not to testify

Defense attorney Eric Nelson just explained to his client that he has the right to testify at the trial. Derek Chauvin just said that he will invoke the Fifth Amendment and not testify.

Here was their exchange:

Nelson: Have you made a decision today, whether you will attempt to testify, or whether you intend to invoke your Fifth Amendment right? 

Chauvin: I will invoke my 5th amendment privilege today. 

The judge then asked Chauvin if the decision was his. He said it was.

See the moment:

91bfe45e-ebb5-4efa-808b-ad9562c3eae4.mp4
02:50 - Source: CNN

SOON: Testimony will resume in the trial of Derek Chauvin

The 14th day of testimony is set to begin soon in the murder trial of former Minneapolis police officer Derek Chauvin.

Chauvin is charged with second-degree unintentional murder, third-degree murder and second-degree manslaughter in the death of George Floyd, who died in May 2020 after Chauvin placed his knee on Floyd’s neck while he pleaded, “I can’t breathe.”

Yesterday, Maryland’s former chief medical examiner testified for Chauvin’s defense that Floyd died due to his underlying heart disease — not the police restraint.

That testimony cuts at the prosecution’s argument, bolstered by five separate medical experts, that the primary cause of death was Chauvin’s restraint of a handcuffed Floyd in the prone position — known as “positional asphyxia.” To get a guilty verdict, prosecutors have to prove that Chauvin’s actions were a “substantial causal factor” in Floyd’s death.

A witness said carbon monoxide may have contributed to Floyd’s death. Another expert says that's "ludicrous."

The idea that carbon monoxide poisoning may have contributed to George Floyd’s death is “completely ludicrous,” Dr. Cyril Wecht, a forensic pathologist and attorney, said yesterday. 

Dr. David Fowler, the retired Chief Medical Examiner for the state of Maryland, testified in the trial of former Minneapolis Police Officer Derek Chauvin Wednesday, saying that carbon monoxide from the police car may have decreased Floyd’s ability to breathe.

Wecht added that carbon monoxide poisoning can cause a “pinkish-red” discoloration of the body, which was not described in Floyd’s case. 

Watch:

f3d0c625-cf92-4a91-9143-67290f1f1853.mp4
01:57 - Source: CNN

What we know about the jury in the Derek Chauvin trial

The jury in Derek Chauvin’s trial has heard from multiple witnesses so far, and they’ve been shown bystander and police footage of George Floyd’s final moments. 

If convicted, Chauvin could face up to 40 years in prison for second-degree murder, up to 25 years for third-degree murder, and up to 10 years for second-degree manslaughter. The charges are to be considered separate, so Chauvin could be convicted of all, some or none of them.

While the jurors are unnamed and not seen on camera, we do know basic details about them.

Here’s what we know about the jury:

  • Five men and nine women were chosen to serve on the jury during the trial in Minneapolis. 
  • Of the 14 jurors, eight are White, four are Black and two are mixed race, according to how the court says the jurors identified themselves.
  • The jury selection process began March 9 at the Hennepin County Government Center and wrapped up exactly two weeks later. 
  • The panel is made up of 12 jurors and two alternates, Judge Peter Cahill said.
  • The jurors all come from Hennepin County, which is demographically about 74% White and 14% Black, according to census data.
  • The prospective jurors previously completed a 16-page questionnaire that asked for their personal thoughts on Black Lives Matter, policing and other topics.
  • In court, each person was sworn in and then questioned one-by-one in a process known as voir dire. The juror’s name, address and other information are kept anonymous.
  • Eric Nelson questioned the prospective jurors for the defense, while Steve Schleicher questioned them for the prosecution.

Read more about about the jury here.

A former medical examiner testified for Chauvin's defense yesterday. Here's what he said.

Maryland’s former chief medical examiner testified for Derek Chauvin’s defense on Wednesday that George Floyd died due to his underlying heart disease — not the police restraint.

Floyd had narrowed coronary arteries, known as atherosclerosis, and an enlarged heart due to his high blood pressure, or hypertension, Fowler said. Floyd’s fentanyl and methamphetamine use and a tumor known as a paraganglioma were other significant conditions that contributed to his death, he said.

Fowler also put forth a novel argument that carbon monoxide from the squad car’s exhaust may have contributed to his death.

In all, he said Floyd’s death should have been classified as “undetermined,” rather than a homicide, because there were so many competing causes.

The testimony cuts at the prosecution’s argument, bolstered by five separate medical experts, that Floyd’s primary cause of death was Chauvin’s restraint of a handcuffed Floyd in the prone position — known as “positional asphyxia.” To get a guilty verdict, prosecutors have to prove that Chauvin’s actions were a “substantial causal factor” in Floyd’s death.

Watch:

87fefecd-cf2b-464e-9b92-97dd7f42a733.mp4
01:06 - Source: CNN

GO DEEPER

Former medical examiner says George Floyd died due to his heart disease – not Derek Chauvin
Derek Chauvin’s defense is using these 3 arguments to try to get an acquittal in George Floyd’s death
‘The lessons of this moment.’ The testimony by police brass at Derek Chauvin’s trial is unprecedented
George Floyd’s brother says he was a big mama’s boy at Derek Chauvin’s trial as prosecution nears its end
Inside Cup Foods, where it seems George Floyd never left
George Floyd’s family describes heart-wrenching experience in the courtroom during Derek Chauvin’s trial, attorney says

GO DEEPER

Former medical examiner says George Floyd died due to his heart disease – not Derek Chauvin
Derek Chauvin’s defense is using these 3 arguments to try to get an acquittal in George Floyd’s death
‘The lessons of this moment.’ The testimony by police brass at Derek Chauvin’s trial is unprecedented
George Floyd’s brother says he was a big mama’s boy at Derek Chauvin’s trial as prosecution nears its end
Inside Cup Foods, where it seems George Floyd never left
George Floyd’s family describes heart-wrenching experience in the courtroom during Derek Chauvin’s trial, attorney says