A powerful bomb explosion has killed at least four people and wounded several others in Pakistan's volatile southwestern Balochistan province.
The blast hit a convoy of Pakistan's government-run Oil and Gas Development Company (OGDCL) on the roadside about 275 kilometers (170 miles) southeast of the provincial capital Quetta.
"It was a remote-controlled device which hit the oil and gas officials' vehicle," AFP quoted a senior police official as saying.
Seven more people were injured in the attack in Balochistan province.
Bomb attacks have flared across Pakistan over the past weeks.
They have inflicted large numbers of casualties both on Pakistani security forces and civilians.
Pakistan's Balochistan Province is wracked by militancy, sectarian violence and a separatist insurgency.
Authorities in Pakistan blame the explosions on militants with links to al-Qaeda and the Taliban in neighboring Afghanistan.
Despite an offensive by the Pakistani government against pro-Taliban militants, they have spread their influence in various regions, killing people and security forces on an almost daily basis.
Since late 2009, there has been a surge in militant bomb attacks in Pakistan.
Thousands of Pakistanis have been killed since former military ruler Pervez Musharraf joined the so-called US-led war on terror following attacks on New York and Washington on September 11, 2001. Press TV
