According to police, the bomb was planted at a roadside.

The deceased were identified as police driver Samad Khan, constable Noor Rehman and FC soldiers Jamshed and Mudasir.

Chief Minister Khyber Pakhtunkhwa Mahmood Khan has strongly condemned the incident.

In a statement in Peshawar, he expressed deep grief and sorrow over the martyrdom of four security personnel including two policemen and two FC personnel.

Earlier in the day a Pakistan Army soldier was martyred during exchange of fire with terrorists at a checkpost in Khyber Pakhtunkhwa's Hangu district.

According to the military's media wing the terrorists attacked a checkpost in Thall Tehsil and during the intense exchange of fire 26-year-old soldier Waqas embraced martyrdom. The sepoy was a resident of Mansehra.