Three suspects entered a room in Knox Towers through an unsecured sliding glass door armed with a handgun and demanded property.

A student received minor injuries when three men entered a College Park Towers apartment last night through an unlocked sliding glass door and robbed the residents at gunpoint, beginning a series of crimes that involved at least two robberies over the span of half an hour.

Three suspects broke into a student apartment on the ground level at 4313 Knox Road at around 11:40 p.m. and brandished a handgun, said Prince George’s County Police spokesman Cpl. Clinton Copeland. The suspects stole a laptop and possibly several cell phones, then fled the scene, police said.

Soon after, another incident, possibly involving the same suspects, took place at the corner of Route 1 and Hartwick Road, Copeland said. Copeland had no more information about what was stolen and whether there were any weapons involved.

Soon after the robberies, three men in puffy black jackets matching the suspects’ descriptions were spotted running across Hartwick Road carrying electronic equipment, but no suspects were caught and no arrests had been made as of press time.

In a third incident at the intersection of Norwich Road and Princeton Street, a man approached a woman and asked for money. University Police said the suspect did not produce a weapon and Prince George’s County Police said the woman was not injured, but did not know if property was taken or if the woman is a student. The woman called Universisty Police from Talbot Hall but declined to file a report.

An ambulance was called for the injured student in the Knox Road apartment, but the student was not taken to the hospital.

There were three victims at the apartment – all students – as well as four witnesses, police said.

Break-ins are rare at the College Park Towers apartments, which have a keyed entry system, according a Towers security guard who makes hourly rounds of the buildings, but declined to give his name. The only problems arise when residents leave their doors or windows unlocked, he said.

Students living in the apartments were concerned by the robbery and expressed frustration with the environment around the apartments.

“I come here all the time and there’s hoodlums hanging out outside,” said senior women’s studies major Michael Altman, who has friends in the Towers building.

“We go here to go to school … and every time I turn my head something else is going on,” he said.

Junior accounting major Colleen Homa lives two apartments down from the victims’ apartment on the ground floor and said her sliding glass doors had a single locking bar when she moved in, but her parents installed an additional lock. She also wedges a broom handle in the door to prevent it from sliding open. Homa said she has never felt unsafe in the apartment before.

“But maybe I should,” she said.

Senior staff writer Heather Keels contributed to this report. Contact reporters Jeremy Arias and Kate Campbell at campbelldbk@gmail.com.