The militants ambushed the vehicles in the Kurram district of restive Khyber Pakhtunkhwa province bordering Afghanistan.
At least 50 people were killed and 20 others injured when several vehicles carrying passengers were targeted by militants in northwest Pakistan on Thursday, officials said.
The militants ambushed the vehicles in the Kurram district of restive Khyber Pakhtunkhwa province bordering Afghanistan.
The vehicles were travelling in a convoy from Parachinar to Peshawar, the capital of Khyber Pakhtunkhwa when gunmen opened fire, the officials said.
Rescue authorities said 50 people were killed and 20 others were injured in the attack.
Most of the victims belonged to the Shia community, they said.