Northern Illinois University says the gunman who opened fire in a lecture hall injuring several people has killed himself.

The school's Web site says police are confirming that the shooter is dead by a self-inflicted gunshot.

Kishwaukee Community Hospital spokeswoman says it received 17 victims all with wounds from the shooting or flying debris, including three with serious injuries. She says she knows of no deaths at the hospital.

Witnesses say the young gunman carried a shotgun and a pistol. One student says the gunman appeared to target students in one part of the lecture hall when the shooting started around 3 p.m.

All classes were canceled Thursday night and the 25,000-student campus was closed on Friday.