PLATTSBURGH City police are investigating a stabbing that occurred outside Tabu Night Club on Margaret Street Sunday night. Officers responded to the scene at approximately 3:07 a.m. to find a 41-year-old male was stabbed three times in the chest area during an altercation outside the club involving several males and females. The victim was transported to CVPH Medical Center for treatment. He was listed as being in stable condition Monday morning. Anyone with information about the incident is asked to contact city police at 563-3411.