A heavily armed gunman who shot to death an English professor and eight others in an Oregon community college classroom was identified on Friday as a student in the class who previously had been turned away from a private firearms training academy.

A day after a rampage at Umpqua Community College in Roseburg that ended with 10 dead, including the gunman, and nine wounded, authorities sought a motive for the bloodiest US mass shooting among the dozens reported over the past two years.

As further details of the Roseburg shooting emerged, a former girlfriend of one of the wounded survivors, a U.S. military veteran, revealed that his heroism in confronting the shooter may have saved others from being killed.

The state medical examiner on Friday confirmed that the assailant, shot dead by police, had been identified as Christopher Harper-Mercer (26) and that he was enrolled in the writing class in which Thursday’s carnage unfolded.

The gunman carried six guns, body armour and five magazines of bullets with him to campus. Seven more firearms were found with a stockpile of ammunition at the apartment he shared with his mother just outside Roseburg, a former timber town about 290km south of Portland.

Celinez Nunez, assistant special agent of the US Bureau of Alcohol, Tobacco, Firearms and Explosives, said all the weapons had been purchased legally.

Harper-Mercer’s preoccupation with firearms dated back at least to 2012 or 2013, when he sought to register for training at Seven 4 Para, a private self-defence and law enforcement academy in Torrance, California, where he lived at the time, said Eloy Way, president and head instructor for the centre.

“We wanted him to take a beginner safety course, and he was trying to tell me that he already had experience with firearms, and I didn’t get a good feeling about him, so I turned him down,” Mr Way told Reuters.

“He was just kind of a weird guy and seemed kind of spoiled, immature,” Mr Way recalled. “He was a little bit too anxious to get high-level training, and there was no reason for it.”

Mr Way’s concerns that Mr Harper-Mercer might misuse the training he would receive at the academy proved prescient.

The gunman stormed into his college classroom, shot the professor in the head and then ordered cowering students to stand up and state their religion, asking if they were Christian, before shooting them one by one, survivors said.

The intervention of another student, Chris Mintz (30) a U.S. army combat veteran who served in Iraq, may have played a key role in preventing a higher casualty toll.

Read the article “Oregon College Shooter was Enrolled at College He Attacked” on irishtimes.com.