Pakistan bus explosion kills 6, wounds dozens

Gas cylinder may have exploded, officials say

By Nasir Habib CNN
POSTED: 05:57 AM PST Dec 29, 2012    UPDATED: 06:05 AM PST Dec 29, 2012 
Police lights file 2
ISLAMABAD, Pakistan (CNN) -

A bus explosion Saturday in the Pakistani port city of Karachi killed at least six people and wounded 40 others, police said.

Most of the victims were bus passengers, said Muhammad Aslam, a Karachi police official.

The cause of the blast was under investigation. Some officials said a gas cylinder may have exploded.

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