Armed robbers broke into an off-campus apartment occupied by Tulane University students on Sunday afternoon and demanded drugs while ransacking their apartment, police said.

Authorities have found no evidence of drugs inside the apartment, however, and detectives are still attempting to determine why the robbers chose the home in the 800 block of Broadway Street.

Tulane Police said in a release that the incident began around 4:30 p.m. Police said that a student was inside the home when two men, one of them armed with a pistol, came in and demanded drugs.

The men tied the student up and began searching the residence’s rooms. At that point, police said, another student entered the home. He was also tied up and asked for drugs, police said.

The New Orleans Police Department said there were three victims, two of them 20 and one of them 19. After the victims were tied up with belts, according to an NOPD offense log, the suspects fled the location with several objects from the house.

“There was no evidence of drugs inside of this particular residence,” NOPD spokesman Ofc. Frank Robertson said. “Detectives are still in the process of trying to figure out a motive as to why the robbers chose this home.”

The first suspect was described as a white male in his late 20s to 30s, 6’1”, 160 to 170 pounds, of medium build, with low-cut black hair and a light scruffy beard, with chest tattoos and armed with a black and green pistol with a silencer.

The second suspect was described as a white male between 160 and 170 pounds, wearing blue jeans and a turqoise shirt, and equipped with a brown stocking over his head.