Iran's intelligence ministry has arrested three people suspected of being behind a bomb attack on a military parade in 2010, media reports said Sunday. The explosion in the ethnically Kurdish **rthwestern town of Mahabad in West Azerbaijan province killed 12 spectators and wounded 81 others. Western Iran, which has a sizable Kurdish population, has seen deadly clashes in recent years between security forces and rebel groups operating from bases in neighbouring Iraq. "Intelligence ******rs identified a terrorist team in the city of Mahabad and three members of the group were arrested," the official IRNA news agency cited an intelligence ministry statement as saying.