An explosion thought to have been caused by a buildup of gas tore through a factory making generators, injuring at least 30 workers, in the Turkish capital Ankara on Thursday, the news channel NTV reported.
Two floors of the plant collapsed in the explosion, and people were trapped in the debris, according to reports.
Television images showed one side of the large four-storey building had been blown out, debris was strewn on parked cars around the building, and emergency workers were treating the injured and carrying them to ambulances.
Some 40 to 50 people worked at the plant, according to reports. Cihan News Agency said there were claims that a buildup of gas had caused the blast.