An Amtrak train struck and killed one man and seriously injured another just outside Washington D.C. at the height of the evening commuter rush on Tuesday.

The men were walking along the tracks behind a shopping center when they were hit, Montgomery County Fire and Rescue (search) spokesman Pete Piringer said. The train came to a stop about a half mile away. Fences line the tracks on both sides, but pedestrians can access the tracks at a vehicle crossing, Piringer said.

No one aboard the Chicago-bound Capital Limited train was injured, Amtrak (search) spokeswoman Sarah Swain said.

Accident investigators closed the tracks serving Amtrak, MARC (search) commuter trains and CSX freight trains in both directions for more than two hours.

Authorities identified the dead man as Raymond Whitley, 25, of Rockville. Keon Kelly, 23, also of Rockville, was hospitalized with life-threatening injuries.