Orlando shooting: Omar Mateen stalking victim comes forward

Last Updated Jun 18, 2016 8:56 PM EDT

New details are coming to light about the violent history of the Orlando nightclub shooter.

Woman tells CBS News Orlando gunman stalked her for years

Newly released documents show Omar Mateen talked about bringing a gun to a college class in 2007, shortly after the Virginia Tech shootings.

A supervisor recommended Mateen be kicked out of that class, calling his behavior "at best extremely disturbing."

School records reveal Mateen's behavior problems began as early as the third grade, where he would talk about sex and violence.

He was suspended a total of 48 days before graduating high school.

Prior to the Orlando shooting, an official told CBS News, Mateen was active on dating sites, searching for both men and women.

Investigation uncovers more about Orlando shooter's erratic behavior

One woman is coming forward, telling CBS News correspondent David Begnaud that Mateen stalked her after meeting her at a courthouse.

"He came right in front of me, and he looked at me, and he said, 'You're gonna be mine. I want to go out with you,'" she said. "And I said, 'No, get out of my face.'"

The woman said that she doesn't think the Orlando attack was just about terrorism.

"He got rejected," she said. "He didn't get what he wanted. He wanted somebody. He wanted something. He got rejected, and that turned him off. That made that switch that made him angry. It made him mad. It set him off."

CBS News has not been able to independently corroborate her story but has no reason to believe it's not true.

There is at least one other woman who has come forward, telling The Associated Press she too was stalked by Mateen.

The woman CBS News spoke to said she never reported the behavior because she only encountered Mateen in public places.