Two passenger trains collided in Iran's north-central province of Semnan on early Friday, killing at least eight people and injuring over 50 others, Iran's semi-official Fars news agency reported.
"The death toll has reached eight and some 52 others have been injured. The injured passengers have been transferred to nearby hospitals," Fars quoted local officials as saying.
Iranian media gave no details on the number of passengers in the trains.
State television showed footage of four derailed carriages, with two of them on fire. A spokesman for Iran's Red Crescent, Mostafa Mortazavi, told Fars that firefighters were trying to control the blaze.
"The accident happened when a passenger train in motion crashed to another one that had stopped at the station," it said.
The cause of the collision was under investigation, it said, adding that rescue teams have been dispatched to the site of accident.
The crash occurred at the Haft-Khan station in the city of Shahroud, about 400 kilometers east of Tehran.