Police are searching for a group of 4 or 5 men after 4 U.C. Santa Cruz students were robbed at knife-point over the weekend. The students were walking to a U.C.S.C bus stop on Bay Street at about 1 a.m. Sunday, when one of the men in the group brandished a knife and demanded their money. The robbers fled in a mid-sized, gray, 4-door sedan with a loud exhaust after stealing a wallet from one of the victims along with an i-pod. Police recovered the wallet from a near-by convenience store and are investigating surveillance footage from the store.