A powerful blast occurred near Airport Security Force (ASF) headquarters in Karachi, collapsed the boundary wall, officials said on Thursday.
The blast damaged wall of adjacent flat, police said adding that two injured were killed in the incident.
ASF officials said that the blast occurred in Civil Aviation Colony. However, nature of the blast was yet to be ascertained.
Police and ASF personnel reached at the spot, cordoned off the area and started investigation.
Blast rocks ASF headquarters in Karachi, two killed
