Cab drivers in the city are on edge after a weekend robbery. Early Saturday morning police say a Roach's Taxi driver picked up two male passengers in the Westfort Area. The two sat in the back seat and they asked to be taken to the Limbrick street area. When they got there the driver had a sharped edged object placed at the back of his neck and was robbed of an undetermined amount of money. The driver was shaken but not hurt. The culprits ran away and are still at large.