A bus is seen in flames at the site of a bomb explosion in Karachi, Pakistan, Dec. 29. Six people were killed and 48 wounded, police and a hospital official said.
Shakil Adil / AP
A Pakistani woman grieves after losing her son in the blast.
Pakistan's commercial capital and biggest city has seen numerous militant attacks over the past 10 years and is also plagued by violence between rival ethnic-based factions.
The bus was destroyed in the explosion and a subsequent fire. Police said the bomb had been planted on the bus, but provincial official Sharfud Din Memon said it was left on a motorbike and went off as the bus passed.
-- Reported by Reuters
People carry an injured man away from the scene of a bomb explosion.
Akhtar Soomro / Reuters
Firefighters douse a bus after a bomb explosion in Karachi.