READING, Pa. (AP) — A man has been convicted of third-degree murder in the stabbing death of a 16-year-old Pennsylvania youth.

Jurors also convicted 30-year-old Avery Valentin-Bair of aggravated assault Friday night in the September 2016 slaying of high school sophomore Christian Torres in Reading (REH'-ding) but acquitted him of first-degree murder.

Berks County prosecutors said the victim and others were wearing Halloween masks and riding bikes around, and a neighbor who thought they were trying to scare children confronted them. Prosecutors said the situation had calmed until the defendant revved up passions again.

The defense said Valentin-Bair was being beaten by the youth and others and acted in self-defense. Valentin-Bair testified that he never intended to kill anyone but was scared for his own life when he grabbed the knife from his waistband.