A 42-year-old man has been convicted of punching a 79-year-old man into a plate glass window after complaining about the older man's karaoke singing at a western New York bar.

The Ontario County District Attorney's Office says a jury Thursday convicted Paul Collen of the town of Naples of second-degree assault.

Prosecutors say Collen was at the bar at the Naples Hotel last March when he punched the 79-year-old man in the face, breaking his nose and facial bones. Authorities say the punch sent the man's head through a plate glass window.

The assault occurred during one of the bar's weekly karaoke nights. Officials say Collen complained about the man's singing, then began punching him before several patrons stepped in to stop the assault.

He faces up to seven years in prison when he's sentenced Oct. 26.