Three Minneapolis police officers where were at the scene when George Floyd was murdered are set to stand trial later this summer.
A year ago today, horrifying footage showed killer police officer Derek Chauvin with his knee pressed on Mr Floyd's neck for more than nine minutes.
Chauvin, who could spend the rest of his life behind bars, was with three colleagues when he killed Mr Floyd, who pleaded "I can't breathe".
Court documents said none of them attempted to intervene to help Mr Floyd, and he was not placed in a recovery position.
The trio, Thomas Lane, J Alexander Kueng and Tou Thoa, were fired from their jobs and charged with aiding and abetting second-degree murder and aiding and abetting second-degree manslaughter.
Their trial was due to begin in August this year but it has been pushed back to March 2022.
Thomas Lane
Thomas Lane, 38, was seen holding Mr Floyd's feet to the ground while Chauvin pressed his knee into his neck.
At the time of the killing Lane had worked with the Minneapolis Police Force for just four days.
He was one of the first to respond to reports that a counterfeit note was used by Mr Floyd, and pulled his gun on him, forcing him out of the car he was in and handcuffing.
Chauvin and Thao arrived moments later.
The video Mr Floyd's killing shows him repeatedly saying "I can't breathe."
The criminal complaint filed against Lane says: "Despite his comments, the defendant took no actions to assist Mr. Floyd, to change his position, or to reduce the force the officers were using against Mr. Floyd,"
Lane was shown on video asking Chauvin whether Mr Floyd should be rolled onto his side.
Lane's lawyer, Earl Gray, claims this should prevent his client being convicted later this year.
Gray told CNN in June last year: "He went into the ambulance, and he's the one that was doing CPR.
"He's a man of compassion, he's not a violent person."
He told the court during a preliminary hearing: "What was my client supposed to do but follow what his training officer said?"
J Alexander Kueng
Kueng, along with Lane, was first on the scene after police were called.
As Mr Floyd was pinned down, Kueng pressed down on his torso, the video showed.
He was later seen checking for a pulse and could not find one, but at no point did he or any of his colleagues attempt to put the victim in a recovery position.
Kueng was hired by the Minneapolis Police Department in December 2019, and the killing happened on just his third shift as a police officer, according to his attorney Thomas Plunkett.
Mr Plunkett said Chauvin was Kueng's training officer.
Tou Thao
Thao arrived at the scene of Mr Floyd's killing with Chauvin.
While his three colleagues pinned down the victim, Thao was standing nearby, blocking worried bystanders from getting close and arguing with them.
He later told investigators: "I’m under the belief that you can always do something differently on every single call… I guess I would be more observant toward Floyd."
Thao had been a police officer with the department since 2012.
In the eight years before Mr Floyd's murder he had six complaints filed with internal affairs, with one of them still open at the time.
The five others were closed without him being disciplined, CNN reports.
