Fort Lauderdale, Fla. ? Lionel Tate pleaded guilty Wednesday to the armed robbery of a pizza delivery man last spring, which could net him up to 30 years in prison but spare him a possible life sentence for violating probation in the 1999 killing of a young girl.

Tate, once the youngest person in modern U.S. history to receive a life prison sentence, said “Yes, sir” when Broward County Circuit Judge Joel T. Lazarus asked him if he would plead guilty to the robbery.

Lazarus scheduled sentencing for April 3, and said Tate could receive between 10 and 30 years in prison.

Tate’s attorney, Ellis Rubin, said the evidence in the pizza robbery case was “overwhelming” and that Tate got the best deal he could.

Tate also admitted that he had violated probation by possessing a gun during the robbery last May, and that he violated laws by doing so. Lazarus said that any sentence he imposes for those violations would run concurrently with the robbery sentence.

Tate was convicted of killing 6-year-old Tiffany Eunick when he was only 12. He said he was imitating pro wrestling moves he had seen on television.