(CNN) A federal grand jury has indicted four former Minneapolis police officers in connection with the death of George Floyd, alleging the officers violated Floyd's constitutional rights, according to court documents filed in federal court in Minnesota.
The indictment says Derek Chauvin -- who was convicted last month on state murder charges in the Black man's death -- deprived Floyd of the right to be free from "unreasonable seizure, which includes the right to be free from the use of unreasonable force by a police officer."
Tou Thao and J. Alexander Kueng were also charged in connection with their failure to intervene in Chauvin's use of unreasonable force, per the indictment. Chauvin, Thao, Kueng and the fourth officer, Thomas Lane, all face a charge for failing to give Floyd medical aid.
According to the indictment, "the defendants saw George Floyd lying on the ground in clear need of medical care, and willfully failed to aid Floyd, thereby acting with deliberate indifference to a substantial risk of harm to Floyd."
Chauvin also was charged in a separate indictment related to an incident in which he allegedly used unreasonable force on a Minneapolis 14-year-old in September 2017, the Justice Department said in a statement Friday.
The first count of that indictment says Chauvin "held the teenager by the throat and struck the teenager multiple times in the head with a flashlight," per the DOJ statement. A second count says he "held his knee on the neck and the upper back of the teenager even after the teenager was lying prone, handcuffed, and unresisting, also resulting in bodily injury."
CNN has reached out to attorneys for all four officers for comment. Chauvin's attorney Eric Nelson declined to comment, as did Thomas Plunkett, an attorney representing Kueng. CNN also has reached out to the Minneapolis Police Department and the city's police union for comment.
Floyd's death on May 25, 2020, sparked protests nationwide against police brutality and racial injustice.
Bystander video showed Chauvin kneeling on Floyd's neck for 9 minutes and 29 seconds while the 46-year-old, handcuffed and lying prone in the street, gasped for air, telling the officers, "I can't breathe."
Thao, Kueng and Lane were on the scene with Chauvin. They also face state charges, including aiding and abetting second-degree murder and aiding and abetting second-degree manslaughter. They have pleaded not guilty, and their joint trial is expected to be held this summer.
The three former officers appeared with their attorneys in federal court Friday via video conference, and all three were released on $25,000 bond. Chauvin, who's awaiting sentencing on state convictions in June, remains in custody.
The new federal charges are separate from the civil investigation into Minneapolis policing practices announced by Attorney General Merrick Garland last month, the Justice Department said Friday.
The attorneys representing Floyd's family said in a statement that they are "encouraged by these charges and eager to see continued justice in this historic case that will impact Black citizens and all Americans for generations to come."
The statement from civil rights attorneys Ben Crump, Antonio Romanucci, and L. Chris Stewart said, "the additional indictment of Derek Chauvin shows a pattern and practice of behavior."
Stewart told CNN's Pamela Brown during an interview Friday that they spoke with Garland after the indictments and shared how the family reacted.
"It was emotional," Stewart said. "They are ecstatic about it. We actually talked to Attorney General Garland today, and I have not heard such passion or sympathy and intention from an attorney general in a very long time. First thing he started with, he said that no one is above the law and that meant a lot."
Stewart added, "He just expressed his sympathy, and you could hear the intention in his voice and the determination to get the family justice. It meant a lot. We were very honored that he did that."
Minnesota Attorney General Keith Ellison, who led the state's prosecution against Chauvin, called the charges "entirely appropriate," saying the federal government had a "responsibility to protect the civil rights of every American and to pursue justice to the fullest extent of federal law."
News of the indictments was celebrated by civil rights leaders and activists like the Rev. Al Sharpton and the National Action Network, who said in a statement the charges show "we have a Justice Department that deals with police criminality and does not excuse it."
"For many years we have tried to get the federal government to make it clear that these crimes are not only state crimes but violate civil rights on a federal level when police engage in this kind of behavior," the statement said. "What we couldn't get them to do in the case of Eric Garner, Michael Brown in Ferguson, and countless others, we are finally seeing them do today and this is a significant development for those of us who have been engaged in the struggle and police reform movement."
Asked about the indictments Friday, White House press secretary Jen Psaki said they and the Chauvin verdict were reminders that "there's still more that needs to be done."
"While that was a moment of justice, certainly, that it is just the beginning," Psaki said. "And it's a reminder of the need to put police reform in place through our legislative process and put those reforms in place across the country."