Police said they believe the suspects entered al-Mabhouh's room about 8 p.m. local time after the hotel cleaning crew finished their rotation on the floor, using an electronic device to gain entry.Al-Mabhouh entered his room at 8:25 p.m., hotel security cameras and an electronic read-out of his room key show. Police say the killing took no more than ten minutes before the suspects left the room and headed immediately to the airport where they boarded flights to various cities in Europe and Asia, police said.Before leaving, police said, the group took great care to make sure the room looked orderly, removing anything that might indicate a struggle The suspects also deliberately turned the safety lock on the room door from the inside in order to suggest the death was normal, police said.