Ohio State University in Columbus was locked down after a car crashed into a group of people on campus and the driver began attacking them with a butcher knife. The suspect was killed and ten were injured in the attack.

The Buckeyes got an alert message from the university authorities instructing them to “Run Hide Fight.” The incident was pinpointed to “Watts Hall. 19th [Avenue] and College [Road].”

Buckeye Alert: Active Shooter on campus. Run Hide Fight. Watts Hall. 19th and College. — OSU Emergency Mngmnt (@OSU_EMFP) November 28, 2016

The incident began when a car rammed into people outside of Watts Hall around 9:40am local time. The driver got out of the car, armed with a butcher knife and began attacking the group, OSU officials said in an afternoon press conference.

Apologies for phone picture, but there appears to be a crashed vehicle outside the entrance to Watts Hall off 19th… https://twitter.com/i/web/status/803290375951564800 — (@BillLandis25) Nov 28 2016

“This car just swerved and ran into a whole group of people,” student Nicole Kreinbrink told NBC News. “It hit a cop really bad.”

However, officials later said that no officers were injured. A cop was on scene within a minute of the start of the attack, and shot and killed the suspect within a minute.

A student tweeted out that the police “tackled” the suspect and surrounded him outside, but the report has not been officially confirmed.

Police cars, fire truck and ambulance line 19th and College avenues near location where active shooter was reported pic.twitter.com/FKJXSMQnan — The Lantern (@TheLantern) November 28, 2016

There were rumors that the incident began with a fire alarm in Watts Hall, but officials said that there was no indication that there was such an alarm involved in the incident. They did say that there was a gas leak in a nearby building earlier in the day, and the Columbus Fire Department was already on the scene when the attack began.

Active shooter alert on campus. Stay indoors, stay safe, text your friends. pic.twitter.com/He5gdPO3J7 — Brynyard Vines (@ItsBrynNotBrian) November 28, 2016

Nine people were taken to the hospital, one of them in critical condition, OSU officials said. A tenth person was being treated for injuries at the scene and may still be transported to a nearby hospital.

On OSU's campus. Law enforcement told us and others to get away from area, get back inside building. @nbc4ipic.twitter.com/iNEbSgSIRc — Olivia Fecteau (@oliviafecteau) November 28, 2016

The injuries were either lacerations from the butcher knife or orthopedic in nature due to the car ramming people on the sidewalk, Dr. Andrew Thomas, the chief medical officer at OSU's Wexner Medical Center said.

The attack was "done on purpose," police said, but noted that it was too early in the active investigation to know whether there was a tie to terrorism.

Backpack being inspected by bomb squad at Ohio State. Courtesy: Bobby Griffith pic.twitter.com/AjBL8QOqXu — Andrew Buck Michael (@AndrewWSYX6) November 28, 2016

The FBI was called in to assist with the OSU Police Department, who is taking the lead, the FBI's Cincinnati office tweeted.

I'm safe in a barricaded room. If you're on campus, get in a room and stay safe. https://t.co/Gaw7gjTx6w — (@goisles29) Nov 28 2016

The suspect was described as “male, black, light complexion, short hair,” according to scanner traffic.

Police surrounding Lane Avenue garage. Swat vans present. Bomb squad as well. pic.twitter.com/0ITvwaqXAm — The Lantern (@TheLantern) November 28, 2016

OSU's flagship campus in Columbus has nearly 60,000 students. It is one of the country's largest universities.

Watts Hall is the engineering building.

@wsyx6 confirms 9 victims in @OhioState active shooter situation. All transported to Hosp. @AP says 2 in stable condition. pic.twitter.com/D3tysNkGij — Tom Bosco (@tomwsyx6) November 28, 2016

Facebook activated a Safety Check for the incident, allowing people in Columbus to mark themselves as unharmed.

An unidentified woman is escorted to an ambulance around 10:30 in front of Koffolt Labs. Stay tuned to @LanternTV for further updates. pic.twitter.com/dU0L1gvWWu — Lantern TV (@LanternTV) November 28, 2016

Two men who were taken into custody in the Lane Avenue parking garage are not considered suspects, police said.

Asked about possible terrorism connection, #OhioState Police said too early to know, but "this was done on purpose" https://t.co/CDBp9qU0OJpic.twitter.com/PJqVQh9nzi — WTTE FOX 28 (@fox28columbus) November 28, 2016

The shelter in place was lifted after an hour and a half, though some locations on campus remain closed, OSU Police said. Classes have been canceled for the remainder of the day.

UPDATE 1/2 : Shelter in Place lifted. Scene is now secure. ALL classes are canceled on Columbus campus for the remainder of the day. — OSU Police (@OSUPOLICE) November 28, 2016

Students leaving campus now. Very emotional. pic.twitter.com/KKsGPAlALK — Michele Newell (@MicheleWsyx6) November 28, 2016

The suspect has been preliminarily identified as Abdul Razak Ali Artan, a college student from Somalia who was in the US as a legal permanent resident, according to NBC News’ Tom Winter.