Updated

A government official says the death toll in a bomb blast in northwest Pakistan's tribal belt has reached 29.

Jawed Khan says the attack occurred at a mosque in the Aka Khel area of Khyber tribal region. More than 50 people were wounded.

Earlier reports said the Thursday explosion occurred in the Orakzai area at a cattle market. The two areas border one another, and the market is apparently near the mosque.

Pakistan has suffered numerous bombings over the last few months, many of them apparently in retaliation for an army operation against the Pakistani Taliban in the South Waziristan tribal area.

No group has claimed responsibility for the latest attack.