According to security sources, the security forces on an intelligence report conducted raid in Harnai and arrested the three militants.
The militants fiercely resisted the forces after which more contingents were called to arrest them.
The forces also captured arms and ammunition from the possession of the arrested suspects. The arrested militants were transferred to an undisclosed place for interrogation.
A deadly attack at the Army Public School of Peshawar on December 16 left 149 people dead most of them schoolchildren.
The government of Pakistan after the school attack set the National Action Plan for counter-terrorism and has launched countrywide crackdown against militants to get rid of the country from the scourge of terrorism.