QUETTA: Militants ambushed a convoy of Pakistani oil and gas workers escorted by paramilitary troops in the restive southwestern province of Balochistan on Thursday, killing 15 people, intelligence officials said.
The attack was claimed by the Balochistan Liberation Front, a secessionist insurgent group that has operated in the region for decades.
According to two intelligence officials, seven employees of Pakistan’s Oil and Gas Development Company were killed, along with eight members of Pakistan’s Frontier Corps who were protecting the convoy. 
The attack took place in Ormara, not far from Gwadar Port, being developed by China, on the Arabian Sea. The port is a key component of Beijing’s multi-billion dollar road-and-belt project linking Beijing to Central and South Asia.
Both the Balochistan Liberation Front and the Balochistan Liberation Army operate in the southwestern Balochistan province, staging relentless attacks to press their demands for independence. They have taken particular aim at the multi-billion dollar China-Pakistan Economic Corridor. The project — including everything from roads to power plants — will link Pakistan’s Gwadar to Kashgar in China’s Xinjiang province.
The Chief Minister of Balochistan Jam Kamal condemned the ambush, calling it a “cowardly terrorist attack.”
The secessionists have taken responsibility for attacks on the Karachi Stock Exchange earlier this year, the Intercontinental Hotel in Gwadar last year and the Chinese Consulate in Karachi.
Thursday’s attack is the second in as many days. On Wednesday, six Pakistani troops were killed in North Waziristan and another soldier was killed in Bajur region, both former tribal areas that are now part of Khyber Pukhtunkhwa province which, like Balochistan, borders Afghanistan.
Pakistan’s border areas served as a base for the Pakistani Taliban and other militants until a few years ago, when the army claimed it cleared the region of insurgents, though occasional attacks have continued, raising fears the Pakistani Taliban are regrouping. 
There was no immediate comment from the military on the Balochistan attack.