Pakistan Stock Exchange (PSX) attackers were in contact with their handler in Afghanistan during the June 29 attack.
Security agencies have revealed that the four militants who stormed the PSX building on Monday were taking instructions from their handler in the Afghan city of Kandahar.
According to the investigators, intelligence agencies successfully intercepted the calls made by the terrorists to their suspected handler as the attack unfolded.
Prior to this, Prime Minister Imran Khan on Tuesday, speaking on the floor of National Assembly (NA) said that the failed terrorist attack on PSX was supported by and orchestrated on the behest of Indian intelligence agencies.
In addition to it, security agencies have successfully traced the car showroom in old-sabzi mandi area of Karachi, which sold the car to the terrorists which was used in the PSX attack.
Investigators are trying to flush out and identify the local facilitators who assisted these attackers, provided weapons and ammunition, and arranged the accommodation of these four terrorists in the metropolitan city.