Ali Muhammad, a 20-year-old Somali refugee attending the Ohio State University, has been identified as the suspect who reportedly launched a violent attack on the OSU campus earlier today.

The attack, which left nine people injured, started at 9:52 A.M. when authorities say the suspect plowed through pedestrians with a car, then ran into the chemical engineering building on campus. According to several news reports, he jumped out of the car with a knife and gun, and immediately started shooting. However, it later came out that Muhammad was not actually carrying a gun. Armed swat teams arrived shortly after and students were asked to shelter in place.

Initial rumors said there were two suspects involved in the attack, but police later confirmed that Ali Muhammad was the only suspect. He was killed by police during the attack. Reports say that Muhammad drove his car into a group of students who left school during a fire drill. It remains unknown if the suspect pulled the alarm himself. He then slashed multiple students with a butcher knife.

UPDATE: A 20-year-old Somali man is the suspect in the Ohio State University attack https://t.co/G7ANHT8lbn pic.twitter.com/kdOzF7aWiV — CBS News (@CBSNews) November 28, 2016

President-elect Donald Trump responded to the tragedy on Facebook roughly two hours ago.

“Watching the news unfold at Ohio State University. Our thoughts and prayers are with all of the students and administration,” he wrote. “Excellent job by the Ohio State University Emergency Management Team (OSU_EMFP) in immediately notifying students & faculty via social media with the message: ‘Buckeye Alert: Active Shooter on campus. Run Hide Fight. Watts Hall. 19th and College.’ THANK YOU to all FIRST RESPONDERS who reacted immediately and eliminated the threat on campus.”

People have started to respond to the news on Twitter.

The OSU shooter was a Somali Refugee… How can anybody justify letting in refugees when stuff like this happens? — Brett Emery (@Brett__Emery) November 28, 2016

https://twitter.com/Aye_Fonz0/status/803327508192038913

https://twitter.com/CammStride/status/803325909008809984

What do you think? Sound off in the comments below.