Iraq's prime minister ordered an indefinite curfew in the southern city of Basra Friday after a Sunni shrine was bombed in a nearby town.
Gunmen destroyed the shrine in the town of Zubair but there were no casualties. At least six other Sunni mosques have been attacked since suspected al-Qaida militants bombed the revered Shi'ite Askariya Shrine in Samarra on Wednesday.
Also Friday, the U.N. refugee agency said many people fleeing Iraqi violence are setting up squalid and unsanitary makeshift camps.
An agency spokesman said the refugees from violence are setting up camps with no clean water, sanitation or access to adequate humanitarian aid. He said the camps are being set up because the new refugees had trouble finding shelter with relatives.
In other news, an al-Qaida-linked group in Iraq says it killed 14 Iraqi soldiers and police after a deadline expired. The group posted a video on the Internet Thursday showing a masked insurgent shooting the Iraqis in the head.
The group on Monday had threatened to kill them within 72 hours unless the government released Sunni Muslim prisoners.
Four U.S. soldiers were killed in combat in Iraq Thursday.
Meanwhile, Brazil's Foreign Ministry says the remains of a Brazilian engineer kidnapped in Iraq in 2005 have been found and positively identified.
Early reports had said an al-Qaida-linked group called the Mujaheddin Squadrons was responsible for the kidnapping of the engineer.
Some information for this report was provided by AFP, AP and Reuters.