Plane crash kills all passengers on board.

A pilot and three passengers were killed Friday after a small plane crashed shortly after taking off from an airport northwest of Detroit.

Airport spokesman Dave VanderVeen said the Cessna 172 went down about 1:40 p.m. Friday at Oakland County International Airport in Waterford Township. Three people aboard the private, non-business-related flight were killed instantly, while the fourth died later at a hospital.