Police have identified the Oregon Community College gunman as 26-year-old Chris Harper Mercer, a mixed race gun enthusiast and NRA supporter.
Mercer allegedly ordered students to stand up and state their religion before shooting them, a witness told the local News-Review newspaper.
Mercer killed 10 students and injured 7 others at Umpqua Community College in Roseburg, Oregon.
He was shot and killed when he exchanged gunfire with police near the scene of the massacre.
The shooting was confined to a single classroom in Snyder Hall. Fox News reports the gunman targeted the students in the classroom.
It has not been confirmed that the student was a student at the college.
National news media outlets swarmed the social media pages of Umpqua Community College students.
According to media reports, Mercer posted his intentions on 4Chan message board on Wednesday.
A brazen Fox News reporter infiltrated 4Chan and questioned the members about not reporting Mercer's posts to law enforcement.
"Some of you guys are alright. Don't go to school tomorrow if you are in the northwest," the anonymous poster wrote.
The 4Chan discussion is posted below.