Los Angeles police called the incident 'random and unprovoked' ... Los Angeles detectives are seeking information Friday following the unprovoked stabbing of a man who was killed while talking to his brother on a FaceTime call. The police have called the incident, which occurred on April 8, "random and unprovoked" when 34-year-old Sergio Santay was attacked while walking on Bonnie Brae Street. ... Police say the suspect has been described as male and wearing a black fisherman hat with marijuana leaves, a turquoise t-shirt, light-colored shorts with dark shoes.