A passenger jet undergoing an engine test at a Californian airport has smashed into a hangar.
The crash sparked fears of a fuel leak and led to the evacuation of other nearby structures and buildings.
Three mechanics were on board servicing the plane at the time but officials said no-one was injured.
The Bombardier Canadair regional jet, which can carry up to 50 passengers, was on a ramp when it suddenly started rolling and struck the Encore Jet Centre at Chino Airport.