Gunmen opened fire on a car carrying a senior Revolutionary Guards commander in restive southeastern Iran early on Saturday, killing a bodyguard, Iranian state media reported.

Brigadier General Hossein Almassi, a Guards commander in Sistan-Baluchistan province, was unhurt after the attack and the attackers were arrested, the official news agency IRNA reported.

Mahmoud Absalom, the bodyguard who was killed in the attack that occurred near a checkpoint in the provincial capital Zahedan, was the son of a senior Guards commander in the region, IRNA said.

The Sistan-Baluchistan province near the Pakistani and Afghan borders has long been plagued by unrest with the country's authorities.