A Carnegie Mellon University student was robbed at gunpoint over the weekend, leading to an additional instruction being issued to students who arrived for orientation.

The robbery victim reported he had been walking home in the vicinity of Margaret Morrison Street and Forbes Avenue at about 2:30 a.m. yesterday when a silver minivan pulled up beside him.

Three men in the van, one of them armed with a pistol, ordered the victim to the ground.

The robbers took the student's wallet and cell phone and forced him to give the access number from his ATM card.

Carnegie Mellon and Pittsburgh police are investigating.

In the wake of the robbery, the university sent e-mail notices to students, advising them to report suspicious activity to campus police and to be wary of similar incidents.

Students are advised not to walk alone at night. Shuttle and escort services are available on campus.

Students should not carry large sums of money, nor debit or charge cards and other valuables when walking late at night.

Robbery victims should not resist, and they should avoid a violent confrontation is possible, police said.

Anyone with information about the Sunday morning holdup is asked to call campus police or Pittsburgh police.