Iran's Fars News Agency (FNA) said Wednesday that 18 people were killed in a blast at one of the Revolutionary Guards' bases in the country's western region.

"Yesterday's (Tuesday) explosion happened at one of the Guards' bases in Lorestan in western Iran, 18 people were killed and 14 injured", Commander Yadollah Bouali was quoted by FNA as saying.

The blast happened after "a place where ammunition was kept" caught fire, Bouali said without giving further details of casualties.

The wounded were taken to hospitals in Khoramabad, some 500 kilometers southwest of the capital of Tehran, FNA reported, describing the blast as a accident.

Iran has been fighting against armed militant and separatist movements along the border with Pakistan and Iraq.

On Sept. 22, a bomb blast in northwestern Iran killed at least 11 people and injured dozens during a military parade in the northwestern town of Mahabad in West Azarbaijan province.