The Islamic State has claimed responsibility for Monday's attack at The Ohio State University.
The attacker, 18-year-old OSU student Abdul Razak Ali Artan, was killed by police after using his car to drive up onto a curb and plow through multiple victims. Police say Artan then got out of the vehicle and started stabbing other victims. The attack injured nine people, some critically.
An ISIS-run news agency on Tuesday claimed credit for the attack, calling Artan a "soldier of the Islamic State," the Columbus Dispatch reported.
The Ohio newspaper also cited a report from the Associated Press, which quoted one of Artan's recent Facebook posts.
"If you want us Muslims to stop carrying lone wolf attacks, then make peace," Artan wrote in one of the posts.
In another post, Artan called on America to "stop interfering with other countries." Using the Arabic word for the global Muslim community, Artan added, "We are not weak. We are not weak, remember that."
"Every single Muslim who disapproves of my actions is a sleeper cell, waiting for a signal. I am warning you Oh America!" Artan wrote.