Multiple people wounded after attack on Ohio State campus

SWAT teams and police respond to reports of a shooting on campus at Ohio State University, Monday, Nov. 28, 2016, in Columbus, Ohio. (AP Photo/John Minchillo)

At least 11 people were wounded in an attack on the Ohio State campus when a man drove his car into a group of students, and then began attacking them with a butcher knife. The suspect was shot dead by a responding officer just a couple of minutes after the attack started.

The suspect has been identified as 18-year-old Abdul Razak Ali Artan, a permanent U.S. resident born in Somalia, according to OSU police. It's unclear when Artan came to the U.S.

Police said they were investigating the possibility it was a terrorist attack. The FBI and other agencies joined the investigation.

The details emerged after a morning of confusion and conflicting reports that began with the university issuing a series of tweets warning students that there was an "active shooter" on campus near the engineering building. The warning was apparently prompted by what turned out to be police gunfire.

An alert from Ohio State University warned of an active shooter on campus, near Watts Hall at West 19th Avenue and College Road just before 10:00am Monday. A first text alert told students to "shelter in place/be observant/take action as needed" and tweets from an official OSU Emergency management account told students to "Run Hide Fight".

Students who were in Watts Hall told ABC 6/FOX 28 a fire alarm went off, causing all the students to evacuate the building. After firefighters responded and cleared the scene, students say a car then drove up, jumped a curb and drive towards the crowd of students. Students say the car hit a planter, and that's when they say they saw a guy jump out with some kind of large knife and begin attacking.

Authorities say the attacker used a but