Deputy Director General ASK, Colonel Tahir Ali said there were no casualties in the new attack.
The Airport Security Force (ASF) Academy, near the Karachi international airport, came under heavy attack by terrorists on Tuesday within a day of a terror siege there ending in a toll of 30, said a Geo News report.
Firing took place from two different locations. Roads leading to the airport have been cordoned off and all the flight services were suspended. At least 1000 police men have been sent to the attack site, said sources.
The Pakistan government has come under stern criticism from public and media after the second attack.