Twenty-two Shiite Muslims were killed Sunday in Pakistan, when an explosion sounded in a market Kurram tribal region near the Afghan border.
The incident occurred in Parachinar as the market was packed with customers, also injured 45 people, many of whom were taken to hospital in serious condition.
The 22 victims were from the Shia minority, confirmed a spokesman for the government, Nek Mohammad.
The explosive, which had been placed in the market, was triggered remotely, according to government officials.
Parachinar is the main town in the Kurram region, which is mainly populated by Shiite Muslims. Kurram is frequently shaken by violence and attacks by Islamist fighters.
The Pakistani army has conducted several operations in the region in particular to eliminate Islamist militants.
No group has yet claimed responsibility for the attack, which could have been orchestrated by al-Qaeda or the Sunni Taliban groups.