The 15 minute video which killed over 20 people was posted a year after the attack. The men in the video identified as Khan Mohammad, Rahmanullah and Farmanullah before carrying out the fidayeen attack gave an interview, reported the Dawn.
The video was produced by Umar Studio, which is said to be the media wing of the banned terror group, Tehreek-i-Taliban Pakistan.
The video also shows the terrorists at an unknown location undergoing arms training. The video then shows the filming of the mini truck full of explosives and the target building.
The men further said in Pusto that they chose death on their own and no one forced them to commit suicide.