UPDATE, 9 p.m.:

Shortly after 8 p.m., a Montgomery County Fire Department spokesman said one track was being reopened for MARC train traffic.

UPDATE, 5:56 p.m.:

Olivia Irvin, an Amtrak spokeswoman, said in an email that “a vehicle obstructing the tracks in Gaithersburg, Maryland came into contact with Amtrak Capitol Limited train 29 at approximately 4:40 pm on its way from Washington, D.C. to Chicago.”

“Due to a fuel leak from the vehicle strike, the local fire department has ordered an evacuation of the train,” the email said. “All passengers will be transferred to a nearby center while the fire department investigates the incident.”

ORIGINAL POST:

A truck collided with an Amtrak train in Maryland during Monday evening’s rush hour, causing a diesel fuel leak and significant rail delays, authorities said.

Pete Piringer, a spokesman for the Montgomery County Fire and Rescue Service, said about 5 p.m. that a train and truck had collided in Gaithersburg.

Daniel Ogren, another spokesman for the department, said that the collision occurred at East Diamond Avenue and Chestnut Street, and that there was a report of a “significant diesel fuel leak” from the front of the train. As a result, Amtrak, MARC and CSX service was suspended, according to Ogren.

There were no immediate reports of injuries, authorities said, and the leak was under control.

MTA commuters should expect delays on the Brunswick Line.