KARACHI- According to the investigating authorities of the Karachi airport attack, SIM cards used by terrorists were issued in Nawabshah.

The authorities have decided to expand their investigation circle since the SIM cards used to power mobile phones in these two separate attacks were issued in the same city. Investigation also revealed that the terrorists of the two different attacks were in contact with each other.

The slain terrorist Abdul Fattah also belonged to Nawabshah.