Attacks kill 28 people across Pakistan, including 11 killed by a bomb blast at football field On Tuesday, police found the bodies of 13 people who were pulled off a convoy of buses in southwest Baluchistan province, shot dead and dumped in a ravine, officials said. A paramilitary soldier was also killed. The motive for the attack late Monday night in Baluchistan province was unclear since no one claimed responsibility. But suspicion may fall on separatists who have been waging a low-level insurgency in southwest Baluchistan province. The buses were headed to central Punjab province, and the separatists have a history of attacking Punjabis whom they view as outsiders encroaching on their independence. The province is also home to Islamic militants who have carried out past attacks, especially on minority Shiite Muslims. Police found the dead bodies of the 13 hostages in a ravine near the town of Machh Paramilitary troops protect bus convoys moving through Baluchistan. But gunmen distracted the troops by shooting at an oil tanker, said Kashif Nabi, a local government administrator. Then, dozens of other gunmen dressed in tribal police uniforms stopped the convoy of five buses at a security checkpoint about 6 kilometres (4 miles) away after overpowering the nine policemen who were stationed there, said Abdul Waheed, deputy commissioner of Bolan district, where the attack took place. A paramilitary soldier trying to sneak into the area was killed by the gunmen, said Waheed. The attackers took 22 passengers with them, including nine tribal policemen, Waheed said, but they left the policemen a few kilometres (miles) away because they were locals, and continued on with the 13 hostages. Police found the bodies near the town of Machh, around 10 kilometres (6 miles) from the checkpoint where the buses were stopped, said Nabi, the local administrator who works in Machh. Elsewhere, Taliban gunmen killed three senior security officials in the same northern area where the militant group shot to death 10 foreign mountain climbers over a month ago. The security officials were ambushed in their vehicle at around 1:30am on Tuesday morning in Gilgit-Baltistan's Diamer district, said Ajmal Bhatti, the district's deputy commissioner. They were attacked shortly after leaving Bhatti's house, where they had been holding a meeting. The dead included an army colonel, a captain and the district police chief, said Bhatti. Their vehicle plunged into a ravine after it was attacked, and authorities later recovered the bodies. Officials have been on high alert in Diamer since Taliban militants killed the 10 foreign climbers in late June at a mountain base camp, said Bhatti. They have been holding meetings at unusual times and places, like Bhatti's house, to avoid attack. The same faction of the Pakistani Taliban that claimed responsibility for the attack on the mountain climbers, Junudul Hafsa, also claimed responsibility for the latest shooting. A spokesman for the group, Abdullah Ghazi, spoke to The Associated Press by telephone from an undisclosed location, saying it was behind the attack. A Pakistani security official said the three men who were killed were investigating the attack on the climbers. They were trying to convince locals to confirm some of the details of the attack and identify the militants involved, said the official, speaking on condition of anonymity because he was not authorised to talk to the media.