An undergraduate was robbed at gunpoint Sunday at approximately 2 a.m. while walking through Cambridge Common towards the Quad.

The Cabot House resident was approached from behind by two males, one of whom was wearing a mask and armed with what appeared to be a black semi-automatic handgun, according to a Harvard police advisory.

The other male demanded the student's money. After he complied and gave the robbers $15 in cash, one suspect struck the victim in the head with the gun.

"It was very fast," the victim said.

He said he suffered a minor laceration but that he did not need medical treatment.

"I was kind of surprised," he said. "I knew it wasn't extremely safe, but I've never heard of anything happening there."

The male student's name is being withheld for security reasons.

The victim said he would no longer use the path through the middle of the Common at night.

"I will probably avoid that path and use Garden Street or Mass. Ave. instead," he said.

The masked assailant is described as 5'11" with a Hispanic accent. Both suspects were wearing dark clothing. No further description was available.

Harvard Police took a report and "searched the area with Cambridge police to no avail," spokesperson Peggy McNamara said.

Neither Harvard nor Cambridge police are increasing patrols of Cambridge Common in response to the armed robbery and assault.

Cambridge Common is not under jurisdiction of the HUPD, McNamara said.

Sgt. Joseph McSweeney of the Cambridge Police Department said there will be no change in the CPD's policing of the area since Cambridge police are "always out there all night."

McSweeney said CPD has no suspects in the case.