DUBAI, Jan 29 (Reuters) - An explosion at a military plant in Iran's central city of Isfahan was caused by a drone attack, Iranian state media reported on Sunday, citing the defence ministry.

"One of (the drones) was hit by the ... air defence and the other two were caught in defence traps and blew up. Fortunately, this unsuccessful attack did not cause any loss of life and caused minor damage to the workshop's roof," the ministry said in a statement carried by the state news agency IRNA. (Reporting by Dubai newsroom; Editing by Josie Kao)