Motorbike gunmen on Friday shot dead a senior police officer investigating sectarian killings in Pakistan’s troubled southwestern province of Baluchistan, police said. The incident took place in Quetta, the capital of the oil and gas rich province, which is plagued by sectarian violence, a tribal insurgency and attacks by Taliban militants. Police said the assailants sprayed Jamil Kakar with bullets when he left his house in his official car, killing him and injuring a police guard. “Jamil Kakar died on the spot. We are investigating the motives of the attack,” Salim Lahri, another senior police official in Quetta said. “The attackers fled on the motorcycle, we have launched a search for their arrest.” Officials said Kakar was investigating several sectarian attacks and that he had received threats in the recent past. Nobody immediately claimed responsibility for the attack but sectarian violence between Sunni and Shiite Muslims has left thousands of people dead in Pakistan since the late 1980s. At least 320 Shiites have been killed in targeted attacks this year across Pakistan, including more than 100 in Baluchistan, the majority from the Hazara community, the US-based Human Rights Watch said.