Pakistan mourns dead after weekend of bloodshed Although a man purporting to be a spokesman for Lashkar-e-Jhangvi, a banned Sunni sectarian group, claimed responsibility, and said the attack was launched by a female suicide bomber, some government officials said they thought Baluch separatists were behind the killings. Gunmen occupied parts of the Bolan Medical Complex for several hours on Saturday night before security forces stormed the hospital, ending the siege. Such was the intensity of the attack on the bus that relatives had trouble identifying relatives. Mohammad Hamza, 19, said that on Saturday he had been given the body of his student sister, only to be told a mistake had been made. "I came here after someone had given us the information that we had taken the wrong body and my sister's body was still here at hospital, but it is not true," Hamza told the AFP news agency. The attacks were launched hours after separatists destroyed a summer home once used by the country's founding father Muhammad Ali Jinnah 50 miles south-east of Quetta. Tariq Azim, a senator and adviser to Nawaz Sharif, sworn in this month as prime minister, said separatists were feeling the squeeze from new efforts to end the insurgency. "This is their way of trying to destabilise an elected government," he said. We will not let that happen. The restive province of Baluchistan, which borders Afghanistan, has been the scene of frequent sectarian attacks directed against the local Shia population. It is also home to a long-running insurgency waged by separatists demanding political autonomy and a greater share of profits from the region's natural resources.