Several people have been killed and at least 50 others injured as two trains crashed head-on in southern Poland, the country's interior minister said.
The accident took place on Saturday night in the town of Szczekociny.
"We have confirmation that several people have been killed and dozens injured," Interior Minister Jacek Cichocki told Polish TVN24 news channel.
Local police told AFP news agency that "about fifty people have been injured."
The head-on collision took place at 2100 hrs local time (2000 GMT) between two trains travelling on the same track, a Polish railways official said.
One was en route to the southern city of Krakow from the capital Warsaw, while the other was travelling to the capital from the south-eastern city of Przemysl.
Initial images of the crash shown on TVN24 showed mangled wreckage.
One survivor told channel they had seen dead bodies and others still alive but pinned down inside the train wrecks.
Injured survivors were being evacuated to hospitals in the region. One officials said 30 survivors were seriously injured.
Firemen were trying to reach people still inside the wreckage after midnight.
"We are trying to reach several people inside the wagons with whom we have established contact," Jaroslaw Wojtasik, a fireman on the scene told TVN24.
Poland's Prime Minister Donald Tusk, Transport Minister Slawomir Nowak as well as the interior minister were travelling to the site of the accident, according to a government statement.