
The blast hit a convoy of government-run Oil and Gas Development Company (OGDCL) in the mineral rich province of Balochistan, where rebels are fighting for autonomy and a greater share of natural resources.
Police said the bomb was fixed to a motorbike and parked on the roadside about 170 miles southeast of the provincial capital Quetta.
"It was a remote-controlled device which hit the oil and gas officials' vehicle," Mohammed Tariq, a senior police official, told AFP.
Balochistan is riven by militancy and sectarian violence. Baloch rebels rose up in 2004 demanding political autonomy and a greater share of profits from the region's wealth of natural resources. Hundreds of people have since died.
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