At least 15 people were killed and dozens others wounded on Sunday in a blast at a used clothes market in Kurram Agency's Parachinar area.
Hospital sources told DawnNews that 47 people were injured as a result of the blast out of which more than 15 victims are in critical condition.
It is currently unclear whether the blast was a suicide attack or a remote-controlled blast. Security forces have cordoned off the area and are investigating the nature of the blast.
No individual or group has claimed responsibility for the attack yet,
Security sources said that the explosion was carried out through a planted device and that two suspects have been taken into custody from the blast site.