No charges against officer who killed Ohio State attacker

FILE - In this Nov. 28, 2016, file photo, crime scene investigators collect evidence from the pavement as police respond to an attack on the Ohio State University campus in Columbus, Ohio. Franklin County, Ohio, Prosecutor Ron O'Brien announced Wednesday, May 3, 2017, that a grand jury has cleared Alan Horujko, the Ohio State University Police officer who fatally shot the man responsible for a Nov. 28, 2016, car-and-knife attack at the university that injured 13 people, Abdul Razak Ali Artan. (AP Photo/John Minchillo, File) (The Associated Press)

FILE – This undated file photo provided by the Ohio State University Police shows officer Alan Horujko. Franklin County, Ohio, Prosecutor Ron O'Brien announced Wednesday, May 3, 2017, that a grand jury has cleared Horujko, the police officer who fatally shot the man responsible for a Nov. 28, 2016, car-and-knife attack at the university that injured 13 people, Abdul Razak Ali Artan. (Ohio State University Police via AP, File) (The Associated Press)

FILE - In this Nov. 28, 2016, file photo, crime scene investigators collect evidence from the pavement as police respond to an attack on the Ohio State University campus in Columbus, Ohio. Franklin County, Ohio, Prosecutor Ron O'Brien announced Wednesday, May 3, 2017, that a grand jury has cleared Alan Horujko, the Ohio State University Police officer who fatally shot the man responsible for a Nov. 28, 2016, car-and-knife attack at the university that injured 13 people, Abdul Razak Ali Artan. (AP Photo/John Minchillo, File) (The Associated Press)

A grand jury has cleared the police officer who fatally shot the man responsible for a car-and-knife attack at Ohio State University last year.

At issue were actions taken by OSU officer Alan Horujko (huh-RUJ'-koh) in November when he shot and killed 18-year-old attacker Abdul Razak Ali Artan.

Franklin County Prosecutor Ron O'Brien announced the grand jury results Wednesday.

Horujko killed the Somali-born Artan after he drove into a crowd outside a classroom building on Nov. 28 and then attacked people with a knife. Thirteen people were injured in the attack.

Authorities believe Artan's attack was partly inspired by an American-born cleric killed in a U.S. drone strike in Yemen.