(Vancouver, WA) -- An investigation is underway in southwest Washington after a group of car prowlers found a man's garage door opener and allegedly used it to enter his home and shoot him to death. It happened early Saturday morning in Vancouver. Police say the suspects were prowling vehicles in the man's neighborhood when they found his garage opener in his car and used it to open his garage door. The man was home and confronted the prowlers, who shot and killed him before fleeing the scene. Police are still searching for the suspects.