ISLAMABAD, July 7 (Xinhua) -- A policeman was killed and four others were injured when a blast hit a police check post in Pakistan's northwest Khyber Pakhtunkhwa province on Thursday, rescue teams said.
The incident happened at the check post located in the Mardan district of the province. Explosive materials were used to carry out the blast, according to the initial report by the bomb disposal squad.
The injured cops were shifted to a nearby hospital. One of them is in critical condition.
An investigation into the incident is underway. No group has claimed the attack yet. ■