Police are investigating the stabbing death of a man Saturday night at the Cromwell Towers apartment building in Yonkers. Police say 22-year-old William Coleman was watching a fight on television with some friends when they left the apartment and went to the second floor. Cops say they met 47-year-old Lloyd Henry, a security guard, and had a verbal confrontation. Henry escorted the group out of the building, but cops say Coleman returned and confronted Henry. Officials say the two men got into a brawl and Henry stabbed Coleman. Coleman was rushed to St. Joseph?s Hospital where he later died. Police say Henry is set to be arraigned on April 10.