ISLAMABADbadugipoker, June 16 (Xinhua) -- Two people were killed and four others injured in an explosion of an improvised explosive device in Pakistan's northwestern Khyber Pakhtunkhwa province on Sunday, official sources saidbadugipoker.

The incident happened in the Kurram district of the province where a vehicle carrying civilians was hit by a roadside planted device, the sources told Xinhua.

The injured people were shifted to a nearby hospital where four of them were in critical condition.

The vehicle was completely destroyed in the explosion, and the police cordoned off the area for investigation.

No group or individual has claimed the attack yet.■