A spokesman for the provincial security commandment of Paktia Sardar Wali Tabasum confirmed the death toll and said a number of children are also among those killed or wounded.
Tabasum further added that the attack has left at least 76 people wounded including a number of children.
The provincial government had earlier said the death toll as a result of a coordinated suicide attack by the Burqa-clad suicide bombers has reached to at least 29 people.
According to statement released by the provincial government’s media office, at least 81 people also sustained injuries in the attack.
The statement further added that the attack was carried out on Khwaja Hasan located in the 2nd police district of the city.
Two suicide bombers who had disguised themselves in Burqas carried out the attack by initially shooting the security guards of the mosque dead, the provincial government said, adding that they detonated their explosives after intruding into the mosque compound.
No individual or group has so far claimed responsibility behind the attack so far.