He told Dawn.com that 25 - year - old Hanifullah alias Hamza carried out the attack .
A spokesman for the militant group Jamaat - ul - Ahrar , Ehsanullah Ehsan , released details and photo of a man they claim carried out the suicide bombing .
Ehsanullah Ehsan told Dawn.com that 25 - year - old Hanifullah alias Hamza carried out the attack .
A spokesman for the militant group Jamaat - ul - Ahrar , Ehsanullah Ehsan , released details and photo of a man they claim carried out the suicide bombing .