JOLIET, Ill. (AP) _ A teen-ager was convicted Friday for the second time in two years of strangling his mother and stuffing her body in a freezer.

Alan Todd Peters, 17, of Wilmington was convicted of two counts of murder by a jury that deliberated about six hours at the Will County Courthouse.

Peters was convicted in October 1985 of killing his mother, Peggy Ann Tutor, and sentenced to 28 years in prison, but a state appellate court ordered a new trial because authorities failed to inform Peters' father, who was in a mental institution, that his son, a minor, was charged in the killing.

Circuit Judge Robert Buchar, who presided at both trials, scheduled sentencing for July 17.

Peters was 14 when he killed his mother during an argument in April 1985. Defense attorneys contend he acted in self-defense when he strangled her with his hands and placed a leather cord around her neck.

The boy then hid his mother's body in an industrial freezer in the family garage, where police found it three days later, said Assistant Will County State's Attorney Mary Rosiek.

Prosecutors contend Peters planned all along to kill his mother. Investigators visiting the home after the slaying found a bag containing the teen-ager's clothing and some of his mother's jewelry - signs the youth planned to flee, Ms. Rosiek said.

Once sentenced, Peters was likely to return to the Joliet Youth Center, where he would remain until he turns 18, Ms. Rosiek said. He then would be transferred to an adult prison, she said.