MIRAMSHAH, Nov 24: Two soldiers were killed and five injured in a roadside bomb explosion near Miramshah in North Waziristan Agency on Sunday while two explosive devices were defused in the same area.

Officials said a military convoy was heading from Miramshah to Mirali town when the bomb exploded, killing two soldiers and leaving five others wounded.

The wounded were brought to Miramshah and later shifted to a military hospital in Bannu.

An official said that a remote-controlled explosive device had been used in the attack. The explosion occurred near Karamkot village and later security forces defused two improvised explosive devices in the same area.

Little-known militant organisation Ansarul Mujahideen claimed responsibility for the blast.

Abu Baseer, who introduced himself as spokesman for the group, told this correspondent on phone that Ansarul Mujahideen had planned and carried out the attack on the convoy.

The group has emerged recently and already claimed responsibility for several attacks on security forces in the past few months.

Earlier, a curfew was imposed in North Waziristan Agency to ensure safe passage for the convoy. Helicopter gunships kept flying over the military vehicles and security forces fired at suspected targets.

US drones were also flying over Miramshah and other areas of North Waziristan when the incident happened.

AFP quoted a security official as saying that two security personnel were killed and five others wounded in the explosion caused by a planted bomb.