Nine passengers were injured when a MARC commuter was rear-ended by an Amtrak engine outside Union Station, Maryland Department of Transportation officials said.

MARC train No. 419 was unloading its passengers at the station about 10 a.m., when it was struck by a locomotive, Amtrak spokeswoman said. The collision knocked the wheels of the last car off the tracks.

Recommended Stories

VRE, Amtrak disputing transfer of workers for train operations

Water main break derails Amtrak service between D.C., Baltimore

Amtrak takes over Union Station: What riders need to know