Four people were killed and dozens injured when a man on a bicycle packed with explosives blew himself up in front of a mosque during Friday prayers in the eastern Iraqi town of Ba'qubah, CNN quoted US-led coalition officials as saying.
It quoted a 4th Infantry Division officer said an improvised explosive device was inside a propane tank strapped to cycle.
He said 36 people were wounded, four seriously.
Ba'qubah is a predominately Sunni town about 64km north of Baghdad. The area has been a centre of violent resistance to the US-led occupation of Iraq.
On December 25, two US soldiers were killed in a mortar attack on a camp near the town.
The following day, a US soldier was killed and another injured in a roadside bomb attack near Baquba. A second soldier was killed while trying to defuse a bomb outside the town.
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