A 17-year-old who said he was sleepwalking when he shot his mother to death was placed on probation for five years and ordered to undergo psychiatric treatment.

Gary Michael Willis of Winnsboro pleaded guilty in June to manslaughter for killing his mother, Pamela Willis. During pretrial hearings, a psychiatrist said Willis was sleepwalking when he killed his mother and wounded his father in 1986.State District Judge Lewis O. Lauve on Tuesday told Willis there was a reasonable doubt whether he was culpable for the crime.