At least five prisoners are being interrogated for planning attacks on army convoys and senior military officers.
According to a report published by BBC Urdu, a civilian intelligence agency has shifted the five prisoners, detained at Bahawalpur and Adiala prisons for the past three years, to unknown locations for investigation.
The detainees are suspected of having links with the outlawed Tehrik-i-Taliban Pakistan (TTP) and feared Ghazi Force militant groups.
According to the BBC report, the prisoners are being probed for involvement in plots to attack military targets, as well as conspiring to abduct senior military officials and their family members.
Sources told BBC that the suspects were picked up for communicating with their partners in Miranshah and Kohat.
The suspects were allegedly issuing directions to coordinate attacks on the military and paramilitary forces.
Last year, a brazen attack on the central jail in Khyber Pakhtunkhwa’s Bannu district had resulted in the escape of over 300 prisoners.
The freed inmates also included Adnan Rasheed, a high profile militant and the main suspect in a terrorist attack on former president General (r) Pervez Musharraf.