The death toll increased because the blast was happened at the time of prayers. Pakistani media reported that blast in the mosque, which is in Akhorwal village of Darra Adam Khel region, was caused by a suicide bomber.
Geo News channel reported that more than 25 were killed and many were injured while the bomb hit the mosque situated near the guesthouse a of pro-government tribal leader Malik Wali Khan.
Till yet no terrorist groups claimed the responsibility for attack. More details are awaited.