Police said gunmen attacked a police patrol in northwestern Pakistan, killing one officer and wounding two others, a private TV reported. Local police official Jawed Khan said the gunmen ambushed the police before dawn Sunday as they were traveling in a van across a bridge in the town of Mardan. Khan said authorities also found the body of a second police officer at a checkpoint several kilometers from the ambush site. The officer's throat had been cut. Mardan is located in North West Frontier Province, an area where the military has battled a persistent Taliban insurgency.