Eleven people were killed and 31 wounded on Wednesday when a bomb targetting members of the elite Revolutionary Guards exploded in the southeastern Iranian city of Zahedan, the state agency INRA reported.“In this thoughtless operation, 11 citizens of Zahedan were martyred,” IRNA quoted Qassem Rezaie, the local commander of Revolutionary Guards ground forces as saying.“The bandits and the agents of insecurity in this criminal act put a bomb near the bus (of the Revolutionary Guards) and martyred these people.”The student ISNA agency quoted another Guards commander, Mohammd Javad Ethna Ashari, as saying that one of the militants who carried out the attack has been arrested.IRNA’s correspondent in Zahedan quoted eyewitness as saying militants placed a booby-trapped car in the path of a bus carrying Revolutionary Guards forces and detonated the explosives when the bus drew near.The eyewitnesses said that among the militants were motorcyclists who shot at the bus to force it to stop. The bomb inside the car, a standard Iranian Peykan model, was apparently detonated by remote control, they added.Zahedan is the capital of Sistan-Baluchestan province which borders both Afghanistan and Pakistan and has been hit by a string of attacks and kidnappings blamed on a Sunni group called Jundallah (Allah’s Brigade).Iranian officials have accused Britain and the US of supporting ethnic minority rebels operating in sensitive border areas.