(CNN)A US Capitol police officer is the latest to be confirmed dead after a mob of President Trump's supporters stormed the US Capitol on Wednesday.
Four other people died during the stunning attack at the heart of American democracy as mob members vandalized the building and assaulted police officers. One woman was fatally shot by police and three people died of apparent medical emergencies.
Several DC Metropolitan Police officers were also injured during the insurrection, police Chief Robert Contee said. One officer had significant facial injuries from being struck by a projectile, and another officer was hospitalized after being pepper-sprayed.
Here's what we know about the people who died:
Officer dies after being injured
Capitol Police released a statement saying Officer Brian D. Sicknick passed away Thursday night "due to injuries sustained while on-duty."
Officer Sicknick was injured while physically engaging with the rioters and collapsed after returning to his division office. "He was taken to a local hospital where he succumbed to his injuries," the Capitol Police statement said.
Officer Sicknick joined the USCP in July 2008, and most recently served in the Department's First Responder's Unit.
"The entire USCP Department expresses its deepest sympathies to Officer Sicknick's family and friends on their loss, and mourns the loss of a friend and colleague," Capitol Police added.
His death is now being investigated.
United States Capitol Police Officer Brian Sicknick
Sicknick was originally from South River, New Jersey, and the youngest of three sons, according to a statement issued by his brother on behalf of his family.
Sicknick "wanted to be a police officer his entire life," his brother Ken said, and joined the New Jersey National Guard in his pursuit of that goal.
According to a statement from New Jersey Gov. Phil Murphy's office, Sicknick was a staff sergeant for the New Jersey National Guard. He served as a fire team member and a leader of the 108th Security Force Squadron, 108th Wing, at Joint Base McGuire-Dix-Lakehurst, Murphy's statement said.
Sicknick's service included two deployments -- one as part of Operation Southern Watch and another as part of Operation Enduring Freedom, Murphy said.
Sicknick's family was "very proud" of his service to his country, Ken Sicknick said.
"Brian is a hero, and that is what we would like people to remember," he said.
Air Force veteran fatally shot by police
A woman was fatally shot by a US Capitol Police employee as the mob tried to force its way toward the House Chamber where members of Congress were sheltering, US Capitol Police said in a statement.
The woman was given medical assistance immediately and taken to a hospital, where she was pronounced dead.
Authorities identified her as Ashli Babbitt, a 35-year-old from Huntington, Maryland.
Babbit's mother, Michelle Witthoeft told CNN on Thursday she was devastated to learn of her daughter's death.
"I loved and admired her greatly," Witthoeft said of Babbitt. "She served this country boldly and proudly."
Babbitt was an ardent Trump supporter who held strong political views, her mother said, and was "passionate enough to die for what she believed in."
Babbitt, who was previously married but separated from her husband in 2019, frequently attended pro-Trump rallies. She flew to Washington, DC, from San Diego, California, with the intent to participate in the protest this week, her mother said.
"Her political views were strong and adamant, and she voiced them whenever she could," Witthoeft said.
Photos: Pro-Trump rioters breach the US Capitol on historic day in Congress
A rioter holds a Trump flag inside the US Capitol near the Senate chamber on Wednesday, January 6.
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Photos: Pro-Trump rioters breach the US Capitol on historic day in Congress
Members of the DC National Guard stand outside the Capitol after the riots.
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Law enforcement officers point their guns at a door that was vandalized in the House chamber after the Capitol was breached.
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A rioter hangs from a balcony in the Senate chamber.
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Trump supporters cover their faces after tear gas was fired in front of the Capitol.
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Photos: Pro-Trump rioters breach the US Capitol on historic day in Congress
A Trump supporter carries a Confederate battle flag in the Capitol Rotunda. During the Civil War, the closest any insurgent carrying a Confederate flag ever came to the Capitol was about 6 miles, during the Battle of Fort Stevens in 1864.
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US Rep. Jason Crow, a Democrat from Colorado, comforts US Rep. Susan Wild, a Democrat from Pennsylvania, while taking cover in the House chamber.
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Richard "Bigo" Barnett, the leader of a pro-gun rights group in Gravette, Arkansas, sits inside the office of House Speaker Nancy Pelosi. Barnett later showed reporters an envelope that he said he took from Pelosi's desk.
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Papers and other materials litter the House chamber after it was evacuated.
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Congressional staffers evacuate the Capitol.
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Congressional staffers put up a barricade inside the Capitol after rioters breached the building.
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Photos: Pro-Trump rioters breach the US Capitol on historic day in Congress
One of the most recognizable figures in the crowd was a man in his 30s with a painted face, fur hat and a helmet with horns. The protester, Jake Angeli — known by followers as the QAnon Shaman — quickly became a symbol of the bizarre and frightening spectacle. In recent months, Angeli has been a regular presence at pro-Trump protests in Arizona, including demonstrations outside the Maricopa County vote-counting center.
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Photos: Pro-Trump rioters breach the US Capitol on historic day in Congress
Tear gas is deployed as rioters gather outside the Capitol.
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Capitol Police detain rioters outside of the House chamber.
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Trump supporters storm the Capitol during clashes with police.
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Members of Congress run for cover as rioters try to enter the House chamber.
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Congressional staffers hold up their hands while Capitol Police SWAT teams secure the US Capitol.
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Rioters walk through the Capitol after breaching barricades to the building.
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Trump supporters try to break through a police barrier outside the Capitol.
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A rioter sits in the Senate chamber.
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A crowd of Trump supporters can be seen from inside the Capitol.
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A Capitol Police officer sprays a person who was trying to enter the Capitol.
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US Reps. Lucille Roybal-Allard and Annie Kuster take cover while rioters were in the Capitol.
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Trump supporters climb a wall outside the Capitol.
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A Trump supporter gestures to Capitol Police in the hallway outside of the Senate chamber.
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People take shelter in the House chamber as rioters try to break in. House members were given gas masks that were under the seats, according to a pool reporter on the House floor.
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Photos: Pro-Trump rioters breach the US Capitol on historic day in Congress
Trump supporters walk through the Capitol's Statuary Hall.
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People bring a ladder to help them break into the Capitol.
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People evacuate the House chamber as rioters attempt to break in.
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Trump supporters try to break through a police barrier outside the Capitol. Shortly after 1 p.m., some pushed through barriers set up along the perimeter of the Capitol, where they tussled with officers in full riot gear.
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Trump supporters gather outside the Capitol.
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Capitol Police try to hold back people outside the east doors to the House side of the Capitol.
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Trump supporters try to break through a police barrier.
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Vice President Mike Pence and House Speaker Nancy Pelosi officiate the joint session of Congress early on January 6. Congress was meeting to count and certify the Electoral College votes before the Capitol was breached.
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Republicans applaud after US Rep. Paul Gosar, lower right, objected to certifying the Electoral College votes from Arizona.
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The certification of Arizona's Electoral College votes is unsealed during the joint session of Congress.
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Senate Minority Leader Chuck Schumer blows a kiss to House Speaker Nancy Pelosi as he and Senate Majority Leader Mitch McConnell arrive for the joint session.
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Congress begins its joint session.
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Trump arrives to speak to his supporters at a rally on January 6. His speech included calls for his vice president to step outside his constitutional bounds and overturn the results of the election. "Hope Mike is going to do the right thing," Trump said at the rally. "If Mike Pence does the right thing, we win the election."
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People rally near the White House in support of Trump.
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Chamber assistants carry Electoral College ballot boxes at the Capitol.
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Trump supporters participate in a rally near the White House.
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A CNN review of Babbitt's social media accounts determined Babbitt frequently voiced support for President Trump and other conservative figures on Facebook. She also shared content promoting political conspiracy theories often pushed by far-right figures.
Babbitt served as a senior airman in the US Air Force from 2004 to 2008 under the name Ashli Elizabeth McEntee, according to military records. She was a member of the Air Force Reserve from 2008 to 2010 and was in the Air National Guard from 2010 until November 2016, records show.
"She served in the United States Air Force and was deployed four times and came back safely, only to have her own country shoot her down," Witthoeft said tearfully by phone.
The US Capitol Police employee who shot Babbitt has been placed on administrative leave and their police powers have been suspended pending a joint Metro Police and USCP investigation, USCP said.
"This is a tragic incident, and I send my condolences to the victim's family and friends," Metro Police Chief Contee said.
Two people who saw the shooting, left-wing activist John Sullivan and documentary filmmaker Jade Sacker, provided CNN with video of the incident and described the moments beforehand.
Sullivan said rioters were using flag poles and other items to smash glass windows inside the Capitol. The woman then tried to make her way through the window when several people with guns came out through the doorways.
"The second that she climbed through the window she got shot right in the neck area, fell backwards," Sullivan said in an interview that broadcast on CNN's "Anderson Cooper 360."
"I just remember the sense of shock and sorrow that somebody just died and did not need to die."
The woman was trying to enter an area that did not yet appear to have been breached by rioters, Sullivan said.
"It was an area that was completely blocked off," he said. "They had chairs up against the doorway, tables, so people couldn't get in."
Three others dead
Three other people who had come from out of state died of "medical emergencies" during the riot, police said.
"One adult female and two adult males appear to have suffered from separate medical emergencies, which resulted in their deaths," Contee said. "Any loss of life in the District is tragic and our thoughts are with anyone impacted by their loss."
They were identified as Benjamin Philips, 50, of Ringtown, Pennsylvania; Kevin Greeson, 55, of Athens, Alabama; and Rosanne Boyland, 34, of Kennesaw, Georgia. The three were on the grounds of the Capitol when they experienced their medical emergencies, Contee said.
Kevin Greeson
Greeson had a history of high blood pressure and suffered a heart attack amid the excitement, his family said in a statement to CNN. He was an advocate of Trump and attended the event to show his support.
"He was excited to be there to experience this event," the statement said. "He was not there to participate in violence or rioting, nor did he condone such actions."
The family says they are devastated by the loss.
"Kevin was a wonderful father and husband who loved life," the family statement said. "He loved to ride motorcycles, he loved his job and his coworkers, and he loved his dogs."
Boyland's family is also mourning her death, her brother-in-law, Justin Cave, told CNN affiliate WGCL. The family is still working to learn more details about the specifics of her death, he said.
As the family watched Wednesday's events, they hoped that Boyland wasn't among the crowd, Cave said. "Tragically she was there and it cost her life," he said.
"She was a wonderful sister, daughter, and aunt. Anyone who knew her knows how compassionate she was, she always put others before herself," Cave said.
DC Fire and Emergency Medical Services transported people to area hospitals with injuries ranging from cardiac arrest to multiple fractures after falling from scaffolding on the West front of the Capitol building.
However, city officials did not say whether any of these people are the ones who died.
Correction: Earlier versions of this article misspelled the last name of Benjamin Philips.
