Update:  A spokesman for Ohio State University says a suspect in an attack on campus that injured at least eight people has been shot and killed.

Ben Johnson also said Monday that injuries in the attack included stab wounds and being struck by a vehicle.

A law enforcement official told The Associated Press that the suspect is believed to have initially struck people with a car before beginning to stab victims. There was no indication that the suspect shot anyone. The official wasn't authorized to discuss an ongoing investigation by name and spoke on condition of anonymity.

The details started to emerge after a morning of confusion and conflicting reports that began with the university issuing tweets warning students that there was an "active shooter" on campus near the engineering building and that they should "run, hide, fight."

10:00 a.m. - Fire department: 7 sent to hospital after active shooter reported at Ohio State, 2 stable, no details on other 5.
Ohio State's official Twitter page retweeted a post from OSU Emergency Management saying there is an active shooter on campus in Columbus on Monday morning.
The tweet says: "Buckeye Alert: Active Shooter on campus. Run Hide Fight. Watts Hall. 19th and College." Watts Hall is a materials science and engineering building.
"Run, hide, fight" is standard protocol for active shooter situations. It means: Run, evacuate if possible; Hide, get silently out of view; or Fight, as a last resort, take action to disrupt or incapacitate the shooter if your life is in imminent danger.
A Columbus police dispatcher declined to comment on the reports, but police vehicles were seen at the scene.