Officials say three police officers have been killed in late night attacks in two northern Iraqi cities, including a bombing that also injured eight bystanders.
Police said a car bomb exploded Tuesday night near a popular cafe in Tarmiyah. A hospital official said the blast killed two police officers and eight cafe customers.
Later, officials said attackers broke in the home of a policeman in the former insurgent stronghold of Samarra and killed him. A health worker confirmed the death.
Attacks on Iraqi security forces have stepped up in recent months as the U.S. military begins to withdraw from the country.
All officials spoke on condition of anonymity because they were not authorized to talk to the media.