At 12:45 am Whittier Police received calls regarding a pedestrian that was laying in the street after being struck by a vehicle. Arriving units found a male down in the street suffering from major trauma. Police immediately called for paramedics but the male was declared deceased at the scene. Witnesses say an argument may have occurred prior to the collision and passed along information about the vehicle that fled the scene. Police are still searching for any information from any witnesses in the area that may have seen anything that could help in their investigation. Homicide detectives are asking for any witnesses to call the Whittier Police Department at 562-567-9200 or may also call the TIPS line at 1800-222-8477.