Second woman claims Orlando gunman stalked her

Last Updated Jun 18, 2016 8:54 PM EDT

ORLANDO, Fla. -- Investigators continue to look into Orlando gunman Omar Mateen's past and whether his wife played a role in the attack at the Pulse nightclub.

A second woman has come forward claiming she was stalked by Mateen. The woman, who asked that CBS News not use her real name to protect her privacy, said she first met Mateen in 2011 at a courthouse in Port St. Lucie, Florida, where he was working as a security guard.

Woman claims she was stalked by Omar Mateen

"The way I met him, walking into a courthouse, he held my keys as I walked in. He didn't want to give them back to me, and he said, 'I want to date you,'" the woman, using the pseudonym Marie, told CBS News. "And I said, 'Give me my keys.' He gave me my keys, and I went about my business."

But later that day, Mateen found her.

"I go out to my car. I was gonna open the door. And he held the door shut so I wouldn't open it," Marie said. "And he looks at me in my face and my eyes, and he says, 'I wanna go out with you, and you are gonna be mine.' And I says, 'No I'm not. Get out of my face.' He says, 'You are gonna be mine. You watch. You are gonna be mine.'"

She said she also encountered Mateen at a local store.

"I was one night at Walmart with my daughter, and I was kneeling looking at something, and he kicked me. I looked up to him, and I said, 'Don't you ever kick me again,'" she said. "He came out of nowhere."

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When asked if she just dismissed Mateen as an obsessed man, she said, "Yes" -- but that he wasn't obsessed enough to call and report it.

"No, I wasn't afraid of him outside. There was no way he would see me out unless he saw me at Walmart," she said. "And at the courthouse -- that's the only places that I would frequent."

Marie estimated that Mateen may have contacted her as many as 30 times over a three-year period.

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

At least one other woman has come forward, telling The Associated Press she too was stalked by Mateen.