The armed robbery of a wholesale seafood business on Princeton Avenue, a burglary in which a handgun, cash and jewelry were stolen from a home on Lawrence Road, and the mugging of a female employee at a store at Quaker Bridge Mall are among some of the more recent crimes Lawrence Township police are busy investigating. Lt. Mark Ubry, a township police spokesman, said the holdup occurred shortly before 9:15 p.m. on Thursday, Dec. 23, when two men armed with handguns walked into the Crab Trap at 1681 Princeton Ave. and confronted the seafood market’s two employees, demanding cash and ordering …