Rescue workers try to extinguish a fire at the site of a blast in Karachi

 
Rescue workers try to extinguish a fire at the site of a blast in Karachi
Rescue workers try to extinguish a fire at the site of a blast near the Ranger's office in Karachi November 8, 2012. A suicide bomber killed at least one person when he rammed his vehicle into the gates of a military base in Pakistan's largest city on Thursday, police said, the latest in a series of audacious attacks on security forces. REUTERS/Athar Hussain