Police sources told Reuters that at least 33 people were killed by a suicide bomber driving a car and gunmen disguised as police stormed a police headquarters in Kirkuk, northern Iraq.
Kirkuk, a religiously and ethnically mixed area of Arabs, Kurds and Turkman, is at the heart of a dispute over oil and land between Baghdad's central government and the autonomous Kurdistan enclave in the north.
The Sunday morning blast wounded at least 70 more people and police said there were still bodies trapped under the collapsed debris of buildings after the attack.
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One of the attackers who murdered a priest in a French church during morning mass in Normandy has been named by prosecutors.
Father Jacques Hamel has been described as man who dedicated his life to his parishioners and still regularly led mass, even at 86.
Rain will spread southeastwards through N. Ireland, Wales and England overnight.