Unconfirmed sources from #Karachi intl. airport that terrorists have hijacked an airplane full of passengers.
Jon Williams, ABC News Tweets:
-Officials: heavy smoke seen from one side of Karachi airport. Explosions heard. Airport security force personnel reported killed
-Police believe at least 10 terrorists attacking Karachi airport - busiest in Pakistan.
(latest 8 minutes ago)
-Update from DG Pakistan military PR. Army Troops moved to Airport, have started reaching. Taking positions