A senior police officer says gunmen riding on motorcycles have ambushed a vehicle carrying paramilitary forces in northwest Pakistan, killing three of them before fleeing.

The officer Abbas Majeed Marwat says the attackers targeted the vehicle of the Frontier Constabulary on Wednesday morning near Peshawar, the capital of Khyber Pakhtunkhwa province that borders Afghanistan. No one claimed responsibility but authorities have blamed local Taliban and other militants for previous such attacks.

The Pakistani Taliban have carried out scores of attacks targeting police, security forces and government officials for supporting the United States. The Pakistani Taliban also views the government as un-Islamic.

Pakistan's military has carried out several operations against militants across the country, but militancy has continued.