PESHAWAR: Two security officials were injured in an explosion that took place in the Khyber tribal region on Saturday, DawnNews reported.

The blast that targeted a security forces convoy took place in the agency's Landi Kotal bazaar.

Khyber is on the main Nato land supply route through Pakistan into Afghanistan, where almost 150,000 foreign forces are battling to reverse an escalating Taliban insurgency, now in its tenth year.

The district neighbours the northwestern city of Peshawar, which is increasingly the target of Taliban and al Qaeda-linked bomb attacks.