A suicide bomber has killed at least 10 people and wounded about 18 others at a funeral in the Iraqi city of Tikrit.
The attack took place at about 2015 local time (1615 GMT) in a tent filled with mourners at the funeral of the father of a provincial councillor.
A man wearing a vest packed with explosives walked into the tent before blowing himself up.
At least 12 other people have died in political or sectarian violence elsewhere in Iraq.
Police said the casualty toll from the funeral attack in Tikrit, 175km (110 miles) north of Baghdad, was expected to increase.
Police captain Laith Hamid said council member Saab Abd Bedeiwi, the son of the man for whom the funeral was being held, was among the dead, the Associated Press news agency reported.
The BBC's Paul Wood in Baghdad said that because of the provincial council link, the attack may have been carried out by insurgents who continue to strike at anyone associated with the Iraqi state.
US troops move
Further north in Mosul, a curfew was lifted, as a measure of calm returned to the city after a series of running battles with insurgents which left a police special forces commander dead.
In Baghdad, there have been armed clashes between Shia militiamen and Iraqi army soldiers.
They came as US forces took up positions in the capital, in the first visible signs that a new security plan is being implemented.
Almost 4,000 US troops are being deployed there in an attempt to reduce the number of killings and kidnappings.
Troops from the 172nd Stryker Brigade Combat Team were seen patrolling predominantly Sunni areas of the west of the city, after moving to there from the northern city of Mosul.
As the US troops moved into Baghdad, police said they had found at least 12 bodies around the city.