Gunmen disguised as airport security workers attack Karachi 's airport . Fuel blazes and heavy machine-gun fire add to confusion at scene . - March 19 : A suicide bomber kills seven people in a crowded market in the city of Quetta, Pakistan.
Gunmen disguised as airport security workers attack Karachi 's airport . Fuel blazes and heavy machine-gun fire add to confusion at scene . 28 people are killed in the attack ; another 24 are injured , officials say .