The US police officer accused of George Floyd's murder told him to stop talking as he repeatedly gasped under the man's knee, according to court documents.
The unarmed black man cried out for his late mother and children as he said the Minneapolis policeman would kill him, transcripts from body-cam footage show.
They were disclosed in court by lawyers for one of the four officers involved. The documents offer the clearest picture yet of Mr Floyd's last moments. His death in May sparked global uproar.
The transcripts were made public on Thursday as Mr Lane's lawyers asked for the case against him to be dismissed.
Transcripts of footage recorded by body cameras fitted to Mr Lane and Mr Kueng show Mr Floyd said more than 20 times he could not breathe as he was restrained by the officers in a Minneapolis street.
At one point, a handcuffed Mr Floyd, while pinned down on the road next to the police car, gasps that he cannot breathe, adding: "You're going to kill me, man."
Mr Chauvin, who is shown in bystander footage appearing to kneel on Mr Floyd's neck for nearly eight minutes, replies: "Then stop talking, stop yelling.
"It takes heck of a lot of oxygen to talk."
The transcripts show Mr Floyd appears co-operative at the beginning of the arrest, repeatedly apologising to the officers after they approach his parked car.
Officers then pulled him out of the car and to the ground. Pinned on the floor, according to the transcript, Mr Floyd cries out a dozen times: "Mama."
He says: "Can't believe this, man. Mom, love you. Love you. "Tell my kids I love them. I'm dead."
At one point, when Mr Floyd continues to plead he can't breathe, Mr Lane asks Mr Chauvin: "Should we roll him on his side?" The officer responds: "No, he's staying put where we got him."
The transcripts were released in support of a legal bid to dismiss the criminal charges against Mr Lane, a rookie officer who was days into the job when Mr Floyd's death happened.
Mr Lane's lawyer Earl Gray, who filed the documents, argued that it was "not fair or reasonable" for his client to stand trial on the charges.