The robbery happened around 1:20 a.m. Monday in an apartment inside the 500 building on the University Courtyard apartment.
According to detectives, the suspects made noise in the hallway, which prompted a resident to slightly open their apartment door. The suspects then stormed into the residence - two of the men brandished pistols and another was armed with a knife.
The four residents and two guests – all students of the University of Delaware - were bound and their mouths were covered with duct tape.
The suspects searched the apartment, repeatedly asking about the location of illegal drugs and cash. They then removed a safe and other personal items from the apartment. Police say they may have fled the scene in a silver four door, newer model car with dark windows that was parked south of the complex.
The same apartment was burglarized between Wednesday November 25 and Saturday November 28 while none of the residents were at home. A relation between the two incidents is being investigated.
The suspects in the robbery are described as three white males and one black male, all 20 to 25 years of age, 5' 10" to 6' tall, average build, wearing baggy blue jeans. One was wearing a Phillies hat; one had a bandana covering the lower portion of his face.
There are no known suspects in the burglary.