At least 10 people were killed and 20 others injured on Friday when a powerful bomb went off in a crowded market in the restive Khyber tribal region in Pakistan's northwest.
The bomb was planted at a shop in the weekly market at Meherban Kalay village in Khyber Agency.
Local residents started rescue activities and rushed the injured to nearby hospitals.
Initial reports had put the death toll at 10, officials said. At least 20 others were injured.
The nature of the blast is yet to be ascertained.
The area where the blast occurred is under the influence of the banned Lashkar-e-Islam led by Mangal Bagh Afridi.
Prime Minister Yousuf Raza Gilani condemned the blast and asked authorities to inquire into the incident.