The man who gunned down ten people and wounded nine others at an Oregon community college was enrolled in the class where the fatal shootings occurred, Douglas County Sheriff John Hanlin said.

Hanlin was asked whether the shooter was a student at Umpqua Community College. He did not have the information or details at the time, but later updated a web page with confirmation Chris Harper-Mercer, 26, was enrolled there.

The hospital received ten patients on Thursday. One died, two were treated and released, and three were transferred to a hospital near Eugene for a higher level of care, Dr. Jason Gray of Mercy Medical Center said.

Of the 4 remaining patients, one was discharged late on Thursday and one will be discharged on Friday. As for the other two, Gray said they were both expected to survive, but one remains in critical condition.

A Southern California man, Ian Mercer, who claimed to be the suspect's father, said that he had spoken with the police and the Federal Bureau of Investigation (FBI).

Earlier, State Attorney General Ellen Rosenblum and other officials had said thirteen people were gunned down after the events near Roseburg, where the shootings were called in at 10:38 a.m. However, authorities in Roseburg said they were not able to confirm that number, and law enforcement officials said it was likely that some victims were counted multiple times amidst the confusion of the scene.

Hanlin could not confirm whether Mercer was included in the 10, though sources said he was one of the victims. Mercer's connection to the college, where he was not a student, remained unclear, law enforcement sources said.

High school student Autumn Vicari said her 19-year old brother J.J. was in a room filled with students when the gunman entered and attacked them. The gunman told people to stand up before asking whether they were Christian or not. Anyone who responded "yes" was shot in the head, and if they said "other" or didn't answer, they were shot elsewhere in the body, usually the leg, according to her brother's account.

4 weapons were recovered from the accident site in Roseburg, in the southwest corner of the state about 60 miles south of Eugene. The investigators also found several magazines for 5.56mm ammunition and a ballistics vest, one of the sources said.

The U.S. Bureau of Alcohol, Tobacco, Firearms and Explosives, U.S. Marshals Service and the FBI joined numerous state and local agencies at the scene.

I had just come out of a writing class at Snyder Hall and was talking to the National Guard recruiter when "we heard a gunshot," Kenny Ungerman, a Navy veteran in his first year in the school's medic program, said.

Another army veteran Chris Mintz was shot seven times while trying to protect other students during rampage, his aunt said. He had undergone surgery, she added.