POMONA (CBSLA.com) — An armed man allegedly robbed three students in the last week at Cal Poly Pomona.

The latest incident happened Thursday when the suspect entered a dorm room at the Alamitos Hall residence.

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Police said the man bound a freshman at gunpoint and then stole computers and other electronics.

The victim freed himself after the robber took off and contacted security.

Police searched the campus by ground and air, but they believe the suspect fled the area after he boarded a local bus.

Student Nikolas Konstantinidis spoke with the victim.

“He seemed shaken up, of course,” he said. “He just said he was (bound) and watched his stuff get taken. He didn’t have too much control over it.”

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Authorities believe the same suspect robbed two other female students outside a different dorm last Sunday.

In that crime, the armed man demanded laptops from the girls.

“Two (robberies) in one week, in my three and a half years here…nothing like that has happened. It’s a safe community. But when this happens, it gets our attention,” said Tim Lynch from Cal Poly Pomona.

The university has stepped up security with extra police cruisers around campus.

“They gave us the campus police’s number, so we have them on speed dial. They’re like, patrolling around. I feel safe,” said student Hailey Stewart.

The suspect is described as a black man wearing a dark colored sweatshirt and dark jeans.

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He also smelled like cigarettes.