A train carrying Republican members of Congress, including Montana Sen. Steve Daines and Congressman Greg Gianforte, to their retreat in Greenbrier, West Virginia, has hit a truck.

The lawmakers were scheduled to spend the next few days at the West Virginia resort for their annual issues conference.

Gianforte and Daines were not injured.

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Daines tweeted from the train that he’s ok, but called for prayers for the drivers of the truck.

In an interview with MTN News, Daines said: “We’re all pretty shook up. It appears everyone on the train is OK, but unfortunately someone lost their life in the truck.”

Other reports indicate at least one person in the truck was killed.

Daines said during the train ride he heard a loud bang and felt a jolt. Some people in the train fell to the floor. Daines said his soda drink was spilled.

Gianforte said from the train it didn’t appear as if there were any serious injuries on the train. He said he and his wife Susan were working on their laptops at the time of the crash. The train lurched and came to a halt, he said.

CBS 19 reporter Laura Perrot is on the scene and tweeted a photo from the crash.

The specially chartered Amtrak train departed Union Station in Washington, D.C. at about 8:30 a.m., and the train hit the back of a garbage truck at about 11:20 a.m. in Crozet, Virginia. The impact threw train passengers from their seats, but so far, lawmakers appear not to have sustained major injuries. Many are also traveling with their spouses and staff.

Rep. Bruce Westerman, R-Arkansas, told CBSN in an interview that as far as he knows, “Everyone on the train is fine.” Westerman was still on the train during the interview. He thought the train was still operable.

Another lawmaker told CBSN that some members jumped from the train to offer help to the people in the truck who were injured.

Rep. Jeff Denham, R-California, tweeted a photo of damage to the front of the train.

Vice President Mike Pence is scheduled to address the retreat this evening.

President Trump is meeting with his national security team but is aware of the accident, White House press secretary Sarah Sanders said.

Amtrak released a statement on the incident that said the train “came into contact with a vehicle that was on the tracks at 11:20 a.m. in Crozet, Va. There are no reported injuries to passengers or crew members. Local law enforcement is investigating the incident and crews are inspecting equipment for damage.”

This is a developing story, and will be updated.