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A gunman robbed a University of Minnesota student Monday morning outside a campus building, school officials and police said.

The crime occurred about 9:35 a.m. on a sidewalk outside Hanson Hall on the West Bank campus, according to the university.

More than one person was arrested early in the afternoon, said campus Police Chief Matthew Clark.

One suspect "used a semiautomatic handgun to threaten the victim" and took her purse and cellphone, a statement from the school read. The woman was not injured, Clark said.

The gunman fled in a gray Volkswagen Jetta, the statement added.

A few hours later, police traced the phone and located suspects about a mile south in the 2200 block of 23rd Avenue S. and arrested them, according to police dispatch audio. A gun was in the car, the officer said.

The holdup occurred on the sidewalk at S. 4th Street and 20th Avenue S., according to the dispatch audio.