Two trains collided head-on in southern Poland late Saturday, leaving at least 14 people dead and another 60 injured, Interior Minister Jacek Cichocki said.
Rescue workers were working to free other passengers from the wreckage and did not rule out more fatalities, dpa reported.
It was one of the "most serious railway catastrophes" in recent Polish history, Transport Minister Slawomir Nowak told TVN 24.
Some 450 firefighters and 100 police officers were working on the scene, and had set up tents to help the injured. They were focusing on the first three wagons of both trains, which were hardest hit, and had established contact with several people still trapped inside.
Ambulances and rescue helicopters were at the site where a six-wagon train traveling from Przemysl to Warsaw collided with a four-wagon Krakow-bound train that was going in the opposite direction. It was unclear why the second train was traveling on the wrong tracks.