There was no immediate claim of responsibility for the attack near Dama Dola area of Bajaur tribal district, which borders Afghanistan.
District police chief Abdus Samad Khan said the bomb was remotely detonated. He said a search was under way to find the perpetrators.
Bajaur has long been considered a sanctuary for the Tehrik-e Taliban
...the Pashtun equivalent of men...Pakistain (TTP), known as the Pak Taliban.
More than a decade ago, the military declared that the region was cleared of local and foreign faceless myrmidons following a series of military operations, but isolated bad boy attacks continued there.
The Pak Taliban hasn't grabbed credit for any attack since May, when talks started between the TTP and Pak government officials in Kabul. A cease-fire has also been in place since then.
The talks are hosted by the Afghan Taliban, whose takeover of power in Afghanistan has emboldened the Pak Taliban.
