A 16-year-old Riverside boy doing stunts in a high school parking lot crashed his new 2008 Yamaha R1 motorcycle into a classroom building, and died a short time later, Riverside police said Sunday.

Coroner's officials identified the teen as Austin Lee Allen, 16, of Riverside.

Riverside police Sgt. Dan Reeves said the motorcycle rider was initially believed to be a student at Martin Luther King Jr. High School, where the crash was reported at 7:22 p.m. Saturday.

Witnesses said Allen was riding the Yamaha alone in a parking lot at the
school, in the 9300 block of Wood Road in the south Riverside area of Woodcrest, according to police and coroner's accounts of the crash.

Allen was doing a variety of high-speed stunts when he lost control of the Yamaha and crashed into the classroom, Reeves said. Allen was wearing a helmet, but he was pronounced dead at 8:18 p.m. at Riverside Community Hospital, Reeves said.

An accident investigation was expected to continue, and police asked anyone with any information to contact Riverside police Detective Rick Prince at (951) 353-7990.