PESHAWAR, Pakistan -- Attackers threw a hand grenade at a roadside police post in northwest Pakistan on Thursday, killing an officer and wounding four people before fleeing the scene, local officials said.
No one immediately claimed responsibility and the attackers' identities were not released after the assault in Mardan, a district in the Khyber Pakhtunkhwa province bordering Afghanistan.
Police spokesman Adnan Khan said officers transported the dead and wounded to a nearby hospital. He provided no further details and said officers were still investigating.
Pakistan’s northwestern former tribal regions share a lengthy porous border with Afghanistan and for years served as a safe haven for militants. The military carried out massive operations to clear the area, forcing the militants to escape into Afghanistan or hide in other areas near the border.