(Vancouver, WA) -- New details are coming to light regarding a deadly Halloween shooting during a trick or treat event inside a shopping mall in Vancouver. A probable cause affidavit released yesterday says 32-year-old Travis Ward was wearing a "Joker" mask when he followed a man to the food court of Vancouver Mall last Thursday and shot him in the back of the head at point-blank range. The man was killed, and two other men were injured. The statement says Ward was at the mall with three other people, including two women and a child dressed as a princess for trick or treating. Ward made his first court appearance yesterday and is being held without bail.