in prison. cnn correspondent josh campbell has more. >> reporter: for the first time since the murder of george floyd last year, former minneapolis police officer derek chauvin is admitting responsibility. pleading guilty wednesday to federal civil rights charges that he violated floyd's constitutional rights. it is all part of a plea deal for the man convicted of killing floyd last year by kneeling on his neck for more than nine minutes. in addition to the more than two decades chauvin was sentenced to by the state, prosecutors have asked for a concurrence sentence of 25 years on federal charges. adding fewer than three years to his overall prison time. far less than the life sentence he could have received. in court, prosecutors asked chauvin as mr. floyd lay on the ground handcuffs and unresisting, you kept your knees on mr. floyd's neck and body even after mr. floyd became unresponsive, correct? correct, chauvin said. when skeed if we agree it resulted in floyd's death.