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A federal court blocked a newly drawn Alabama congressional map on Tuesday because it didn’t create a second majority-Black district as the Supreme Court had ordered earlier this year.

In a unanimous decision from a three-judge panel, which had overseen the case before it reached the Supreme Court, the judges wrote that they were “disturbed” by Alabama’s actions in the case.

The state had snubbed the Supreme Court’s order – a surprise 5-4 decision in June – that the maps should be redrawn. White voters currently make up the majority in six of the state’s seven congressional districts, although 27% of the state’s population is Black.

“We are deeply troubled that the State enacted a map that the State readily admits does not provide the remedy we said federal law requires,” wrote the judges, two of whom were appointed by former President Donald Trump.

Alabama officials on Tuesday filed notice that they are appealing the ruling.

“While we are disappointed in today’s decision, we strongly believe that the Legislature’s map complies with the Voting Rights Act and the recent decision of the U.S. Supreme Court,” the office of Alabama Attorney General Steven Marshall said in a statement. “We intend to promptly seek review from the Supreme Court to ensure that the State can use its lawful congressional districts in 2024 and beyond.”

Alabama officials also asked the three-judge court to freeze its opinion invalidating the congressional map but said they will formally ask the Supreme Court for a stay on Thursday.

This redistricting battle – and separate, pending litigation over congressional maps in states such as Georgia and Florida – could determine which party controls the US House of Representatives after next year’s elections. Republicans currently hold a razor-thin majority in the chamber.

The three federal judges overseeing the Alabama case on Tuesday ordered a special master to submit three proposed maps that would create a second Black-majority district by September 25.

The panel wrote that it was “not aware of any other case” in which a state legislature had responded to being ordered to a draw map with a second majority-minority district by creating one that the state itself admitted didn’t create the required district.

“The law requires the creation of an additional district that affords Black Alabamians, like everyone else, a fair and reasonable opportunity to elect candidates of their choice,” and Alabama’s new map, they wrote, “plainly fails to do so.”

JaTaune Bosby Gilchrist, executive director of the American Civil Liberties Union of Alabama, which has been fighting the case, praised the ruling: “Elected officials ignored their responsibilities and chose to violate our democracy. We hope the court’s special master helps steward a process that ensures a fair map that Black Alabamians and our state deserve.”

Supreme Court had ordered new map

This summer, the Supreme Court, in a 5-4 ruling, had affirmed an earlier decision by the three-judge panel and ordered the state to redraw congressional maps to include a second majority-Black district or “something quite close to it.”

The Supreme Court’s surprise decision in Alabama – coming after the right-leaning high court has chipped away at other parts of the Voting Rights Act in recent years – has given fresh hope to voting rights activists and Democrats that they could prevail in challenges to other maps they view as discriminating against minorities.

But the new map approved by Alabama’s Republican-dominated legislature – and signed into law by GOP Gov. Kay Ivey – in July created only one majority-Black district and boosted the share of Black voters in a second district from roughly 30% to nearly 40%.

The pending cases center on whether GOP state legislators drew congressional maps after the 2020 census that weakened the power of Black voters in violation of Section 2 of the historic Voting Rights Act.

Republicans control all statewide offices in Alabama and all but one congressional seat. The single Black-majority congressional district is represented by Democratic Rep. Terri Sewell, the state’s first Black woman elected to Congress.

Alabama officials have argued that the map as redrawn by state lawmakers was aimed at maintaining traditional guidelines for congressional redistricting, such as keeping together communities of interest. And they have signaled that they hope to sway one of the Supreme Court justices who sided with the majority in June.

Rejects reliance on Kavanaugh

The state’s briefs before the three-judge panel referenced a concurring opinion by Justice Brett Kavanaugh – one of the two conservatives who sided with the liberal justices on the high court to vote against the original Alabama map – that questioned whether “race-based redistricting” can “extend indefinitely into the future.”

The lower-court judges weren’t convinced by the state’s arguments.

They wrote that after reviewing the concurrence, as well as a part of the Supreme Court’s ruling which Kavanaugh didn’t join, “We do not understand either of those writings as undermining any aspect of the Supreme Court’s affirmance; if they did, the Court would not have affirmed the injunction.”

Rejects ‘affirmative action’ argument

The judges also rejected Alabama’s argument that drawing a second Black-majority district would unconstitutionally constitute “affirmative action in redistricting.”

“Unlike affirmative action in the admissions programs the Supreme Court analyzed in [this year’s affirmative action case], which was expressly aimed at achieving balanced racial outcomes in the makeup of the universities’ student bodies, the Voting Rights Act guarantees only ‘equality of opportunity, not a guarantee of electoral success for minority-preferred candidates of whatever race,’” the panel wrote.

“The Voting Rights Act does not provide a leg up for Black voters – it merely prevents them from being kept down with regard to what is arguably the most ‘fundamental political right,’ in that it is ‘preservative of all rights’ – the right to vote.”

Earlier, in a letter to state lawmakers, Marshall had argued that a separate Supreme Court ruling in June – after the high court’s Alabama redistricting decision came down – that ended affirmative action in college admissions meant that using a map in which “race predominates” would open up the state to claims that it was violating the 14th Amendment’s guarantee of equal protection.

This story has been updated with additional developments.

CNN’s Dianne Gallagher contributed to this report.