Three Frontier Corps (FC) personnel were martyred and two others injured in a suicide attack on a check post on Quetta-Karachi Highway in Mastung area of Balochistan, some 60km from the provincial capital, on Monday.Official sources said that a suicide bomber detonated himself near the FC’s Aziz check post in Khud-Cocha area of Mastung.“A young man wearing a suicide vest tried to enter the FC check post. As he was challenged by security personnel, he blew himself up near the check post, martyring three FC personnel and injuring two others,” a security official said.Soon after the attack, police officers and FC personnel rushed to the site and cordoned off the area. They shifted the bodies and the injured to Ghous Bakhsh Raisani Memorial Hospital.The martyred FC personnel were identified as Subedar Munir Jan, sepoys Ahmed Jan and Pervez Ahmed, while the injured as sepoys Nasir and Irshad.The official sources said had the suicide bomber managed to enter the check post, the casualties would have been much higher.The bomb disposal squad reached the site and started the investigation.No one has claimed responsibility for the suicide bombing so far.