10 reported dead in shooting attack at Oregon community college (with Video)

At least 10 people were killed and seven others were injured when a gunman who demanded to know his victims' religions opened fire at Umpqua Community College in Roseburg, Ore.

NBC News reports that officials earlier had said 13 people were dead after the events. But investigators in Roseburg said it was likely that some victims were counted multiple times amid the confusion of the scene.

The shooting took place at Snyder Hall on the college campus.

The gunman was killed in a firefight with Douglas County sheriff's deputies, Sheriff John Hanlin said. Multiple law enforcement sources identified him as Chris Harper Mercer, 26, but the sheriff wouldn't confirm that identity

After the shooting, the campus was placed on lockdown and students have been transported off campus to Douglas County fairgrounds.

Umpqua is a two-year school with about 3,300 full-time students and 16,000 part-time students. It started offering classes in 1961. Roseburg is about 20 miles south of Eugene.

Video from NBC News: