At least nine people were injured on Sunday in an explosion and fire at a chemical factory in Iran's central province of Isfahan.
The cause of the blast is being investigated and the injured have been taken to hospital, said Abbas Abedi of the province's medical emergency centre, the Mehr state news agency reported.
The explosion occurred at Sepahan Nargostar Chemical Industries at 4am local time.
The plant is about 45 kilometres northwest of Isfahan city.
The company manufactures "industrial-commercial explosive materials" and was established in 1941, according to its website.
The blast led to speculation of a sabotage campaign after a series of apparent accidents and fires recently.