Federal officials say the most likely cause of the collision in South Carolina is a locked track switch that diverted the passenger train into a siding.
No serious injuries were reported among the Republican members of Congress on the train, who were on their way to an annual retreat in West Virginia.
Authorities say three people were killed and 13 seriously injured.
At least 12 people died and more than 260 were hurt when a passenger train collided with a truck in rural South Africa on Thursday, according to the country's transport minister.
Spanish authorities say 45 people were injured when a double-decker commuter train crashed into a barrier.
Two trains have collided in Austria, injuring a dozen people - four of them seriously. Emergency services rushed to the scene and were able to evacuate all passengers.
One line of inquiry into deadly derailment in Washington State will be whether the driver, accompanied by a trainee conductor, was distracted
A US passenger train that derailed killing at least three people was travelling at nearly three times the speed limit, say investigators
The Amtrak 501 train was traveling 80 miles (130 km) per hour in a 30 mile-per-hour zone on its inaugural journey between Seattle and Portland.
An Amtrak passenger train derailed and is currently dangling from a motorway in Washington state. This is how witnesses described the scene.
Firefighters struggle to get to the injured due to broken power cables after a passenger and freight train collide
More than a hundred reindeer have been killed by freight trains in Norway in just three days.
Four people have been killed and at least eight injured in an accident between a train and a military vehicle in Finland
Two trains have collided in Egypt's coastal city of Alexandria, killing at least 35 and injuring over 120 others
At least 36 people died and 123 were injured after two trains collided in Alexandria, Egypt, according to the country’s health ministry.
Four people narrowly avoided serious injury when a train grazed their car in Koszalin, Poland.
Dozens of people were injured, one seriously, after a commuter train slammed into a buffer stop at Barcelona’s Estació de França station, the second busiest railway station in the Catalan capital.
More than 50 people were injured when a commuter train slammed into the buffers at Francia station in the city centre
At least 54 people were injured at the city's Francia station, one of them seriously
This is the moment a train ploughs into a car in Poland.