The incident took place during funeral prayers in Tazekhel area of the agency, according to official sources. They added that the attack was probably because of enmity between two rival groups.
The injured were moved to the Civil Hospital Hangu.
Read: Violent day: Four killed, eight injured in Kohat
Earlier on July 9, a resident of Orakzai Agency, was shot dead in Dal Shehzadi. The assailants managed to escape after committing the crime.
In April, five suspected militants were killed while two hideouts destroyed during an aerial search conducted by security forces in the Shakar Tangi and Safeel Dara areas of the agency.
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