A passenger train derailed in central Turkey early Sunday, killing at least nine people and injuring dozens of others, possibly due to ice on the tracks, railway authorities said.
It was the nation's fifth major rail accident in less than four years.
Two cars rolled over when the train from Istanbul to the southern city of Denizli derailed near the city of Kutahya, the railway officials said.
Authorities said the train was carrying 436 passengers at the time of the accident.
Five of the injured were in serious condition, officials said. CNN-Turk television put the injury toll at 50. At midday Sunday, the rescue operation was still under way.
Railway authorities suspected that the train might have been derailed at a turn because of ice on the tracks, the state-run Anatolia news agency reported.
In November 2005, a passenger train rammed into a truck carrying farm workers in southern Turkey, killing nine people and injuring 30 others. In August 2004, a passenger train ignored a stop signal and rammed into an oncoming train in northwestern Turkey, killing six people and injuring 85.
The previous month, a newly inaugurated high-speed train from Istanbul to Ankara derailed, killing 37 people. Three days later, a passenger train slammed into a minibus at a western railroad crossing, killing 15 and injuring four.