A motorcyclist was killed on Thursday after being shot by unknown gunmen from a passing car on Shevtai Yisrael Street in Jaffa.The 23-year-old Jaffa resident was treated by Magen David Adom paramedics on the scene but succumbed to his injuries.RELATED:Opinion: Crime deterrence through urban designTwo men killed in Taibe drive-by shootingPolice said the shooting was crime-related, and a homicide investigation has been launched.