A bomb exploded at a checkpoint in the north-western Pakistani city of Peshawar on Tuesday, killing 10 people and wounding over 30, local officials said.
Police guards and paramilitary troops guarding a highway leading to Afghanistan in the Jamrud area of Khyber tribal district were the targets, administration official Manzoor Shah said.
A preliminary investigation indicated that the bomb was planted on a motorcycle parked near the checkpoint, Shah said.
It was not yet clear whether it was a suicide attack, he told dpa.
At least 10 bodies, including three security officials, a child and a woman, were brought to the Hayatabad Medical Complex in the nearby city of Peshawar, medic Nauman Khan said.
Thirty-two people were being treated for injuries, Khan added.
The attack comes a day after a Taliban roadside bomb killed six soldiers in the south-western city of Quetta.
Violence has surged in Pakistan in the first few weeks of 2016, after several months of calm following a series of military offensives against Islamist militants in the country’s restive tribal areas.
No group has claimed responsibility for Tuesday’s attack so far but the Taliban rebels often target security forces in the region.