The Kohat mosque blast has renewed concerns in Pakistan over militant activity linked to Afghanistan.
According to officials, the suicide bomber has been identified as Matiullah, an Afghan national.
Authorities are continuing efforts to identify the second suspected attacker.
Afghan National Identified in Kohat Attack
The identification of the bomber has prompted renewed scrutiny of militant networks operating from Afghan territory.
Pakistani authorities have alleged that Afghan soil is being used by militant groups to plan and support attacks inside Pakistan.
The claims come amid continued security tensions along the Pakistan-Afghanistan border.
Recent Border Infiltration Attempts
Pakistani security forces have reported several recent attempts by militants to cross the border from Afghanistan.
Last month, 15 militants were killed while attempting to infiltrate near Ghulam Khan, according to Pakistani authorities.
Five other militants were killed after an infiltration attempt was thwarted in South Waziristan.
Security forces have also reported repelling another attempted border crossing near Kurram.
Concerns Over Militants in Afghanistan
Pakistan has repeatedly raised concerns about militant groups operating from Afghan territory.
United Nations assessments have also documented the presence of multiple militant organisations in Afghanistan.
According to the material cited by Pakistani authorities, more than 20 militant groups are active in the country.
Pakistani officials have specifically raised concerns about groups the government refers to as Fitna al-Khawarij and Fitna al-Hindustan.
The latest identification of the Kohat bombing suspect is expected to add further pressure to ongoing security discussions between Pakistan and Afghanistan.
