A Somali student at Ohio State University drove his vehicle into a crowd of pedestrians Monday and then got out and began stabbing people, injuring 11. He was shot and killed by police.
Ohio State University identified the attacker as Abdul Razak Ali Artan, a student at the school.
Hospital officials said none of the victims has life-threatening injuries.
OSU President Michael Drake said initially there were rumors of a second suspect. However, Drake said police searched the area and believe there was only one attacker. The FBI also has joined the investigation.
Drake said he would not speculate about a motive. He said it was a deliberate attack because the suspect drove his vehicle over a curb to hit pedestrians on a sidewalk. He said the suspect then got out of the car and began stabbing people with a butcher knife.
Students said they barricaded themselves inside classrooms and offices, pilling chairs in front of doors, when the incident was happening.
There are nearly 60,000 students at Ohio State's main campus in Columbus.