The blast in Lower Orakzai tribal agency also injured six other people, Radio Pakistan reported. Television channels said the incident occurred near an army check post.
However, there was no report of any casualty among the security forces.
Radio Pakistan quoted the regional administration as saying that the explosive was planted in a shop. No group has claimed responsibility of the attack.
Taliban had been active in Orakzai agency, routinely launching attacks on the security forces and Shiite Muslims.
Islamabad: At least three people were on Friday killed following a bomb blast near an army check post in a Pakistani tribal region, officials said.
First Published: Friday, February 08, 2013, 17:13