Updated at 4:37 p.m.
A man was shot and killed Monday after he struck a group of pedestrians with a car and then got out and cut people with a butcher knife on the Ohio State University campus in Columbus, Ohio, according to university officials.
Nine people were taken to three local hospitals, Andrew Thomas, the chief medical officer for OSU's Wexner Medical Center, said at a news conference. One of those injured was in critical condition.
Some of the victims were injured when they were hit by the car, while others sustained stab wounds, Thomas said.
Officials later identified the suspect as Abdul Razak Ali Artan, who they say was an OSU student. They added that they believe he was the only attacker.
OSU Director of Public Safety Monica Moll provided this timeline of how the attack unfolded:
• "Around 9:52 a.m. the emergency dispatch center got a report that a vehicle had struck pedestrians.
• "At 9:53, an OSU [Police Department] officer called out on the radio that shots were fired. He engaged the suspect, who had gotten out of the vehicle after hitting pedestrians. The suspect cut multiple individuals.
• "The officer engaged the suspect and shot and killed the suspect."
"We're very fortunate that an OSU PD officer was there and took quick action," Moll said, "and we believe that injuries were minimized as a result of that." Police later identified the officer as Alan Horujko.
According to The Lantern, OSU's newspaper, Hurujko is a 2012 graduate of the university and joined the campus police force last year.
Ohio State University Police Chief Craig Stone said this was a deliberate attack. "To go over the curb and strike pedestrians, and then get out and start striking them with a knife -- that was on purpose," he told reporters during the news conference.
OSU's emergency management division first tweeted a warning about an active shooter at 9:56 a.m. local time: "Buckeye Alert: Active Shooter on campus. Run Hide Fight. Watts Hall." Watts Hall houses the Materials Science and Engineering department.
Multiple law enforcement divisions were part of the response. Columbus Ohio Police said SWAT, K-9 units, negotiators and a helicopter unit were on the scene, with OSU Police taking the lead in the situation. The ATF's Columbus Field Division said it also sent agents.
At 11:30 a.m., the emergency management division tweeted that the scene was secure and shelter-in-place warnings had been lifted.
An OSU directory record said Artan majored in Logistics Management. An individual with the same name and major spoke with The Lantern in August. He said he had just transferred from Columbus State.
"I'm new here. This is my first day. This place is huge, and I don't even know where to pray," he said, and added that Columbus State had designated rooms for Muslims to pray. "I wanted to pray in the open, but I was kind of scared with everything going on in the media.
Classes at the Columbus campus were canceled for the remainder of the day, according to the emergency management division, and the immediate area around the incident remained closed.
Columbus Mayor Andrew Ginther tweeted, "We lift up the victims and first responders of the tragedy this morning at Ohio State University in our thoughts and prayers."