At least three people have died and several more suffered injures after an Amtrak train derailed in north-central Montana.
The National Transportation Safety Board said late Saturday it will investigate the incident.
The Seattle-bound Empire Builder train had about 141 passengers and 16 crew aboard when eight cars derailed near the town of Joplin at about 4:00 pm MDT (2200 GMT), Amtrak said in a statement.
People trapped aboard soon after the derailment have all been taken off the train, said the official at the Liberty County Sheriff's Office, who spoke on condition of anonymity.
There were multiple injuries but no final count, the official added. A social media user posted photos of train cars on their side after the incident and other damaged train cars.
The cause of the incident was not immediately clear.
The 10-car train with two locomotives had departed from Chicago.
Amtrak said Empire Builder trains originating on Saturday are cancelled between Minot, North Dakota, and Shelby, Montana, while on Sunday the westbound Empire Builder train will terminate in Minneapolis and an eastbound Empire Builder train will originate in Minneapolis.


Fire in rebel-held east Congo kills 24 schoolchildren
Trump touts $5,000 payout if Republicans win as Vance waits in wings
Search expands after Philippine ferry fire kills five and leaves dozens missing
Trump says Iran war to end after US midterm elections
At least 20 killed in cargo vessel fire at China shipyard, state media reports
US military says it struck vessel in Caribbean, killing 3
At least 14 killed in explosion at weapons depot in Syria
US hits five Iranian oil tankers after attack on Navy ships
