The incident took place in Swat.
The incident came to light during anti-polio campaign in the area.
The suspect told the police that he was inspired by the game PUBG, from which he learned about the style of killing he used on his sisters.
The shocking event was caught on surveillance cameras, which vividly show the intensity of the assault.
The incident was captured by the CCTV cameras installed at the shop.
The cause behind the move is yet to be known.
Rescue teams were summoned and are working to evacuate residents from the building.
The fashion designer also shared some old footage of Mehrub.
The revelation was made by Casey Wasserman, chairman of the LA2028 Olympic and Paralympic Games.
She expressed her gratitude to her fans for their unwavering love and support throughout the years.