December 11, 2012 (DENNIS) _ Dennis police are searching for a suspect who reportedly used a knife to rob a local liquor store Monday night. Investigators say the Marine Package Store on Route 28 in Dennisport was targeted just after 7 p-m. A suspect described as wearing dark clothing, wearing a ski mask and carrying a knife held up the store. He fled the area on foot with an undetermined amount of cash. No one was injured in the robbery. Anyone with information is asked to contact dennis police.