PESHAWAR: Three would-be suicide bombers and one of their handlers were killed in two separate incidents when their vests detonated prematurely, according to security sources.

The first incident took place in Peshawar's Dir colony area where a motorcycle-riding suicide bomber was being equipped with the explosive-laden vest by his handler.

According to security sources, the explosives detonated while the handler was camouflaging the suicide vest with another jacket. Both the handler and bomber were killed in the blast.

The incident took place near a security check-post, which was presumed as the target of the would-be attackers. The faces of the suspects were unrecognisable as a result of the blast.

In the second incident, two suicide-bombers were killed prior to reaching their destination in Garang area of Pandiali Tehsil in Mohmand tribal area, according to security officials.

In another unrelated incident Bomb Disposal Squad (BDS) personnel defused explosives planted on a motorcycle on main GT road in Tarnab Farm area in the outskirts of Peshawar.

According to BDS official Zahid Khan the motorcycle was fitted with remote-controlled detonator as well as a mobile phone detonator. The ignition system of the motorcycle was also connected to the bomb which had six to seven kilograms of explosive material and the was filled with pellets to increase the devastation caused by the blast.

The motorcycle was found parked a few yards away from security checkpost which was presumed as the target for the attack.