Iraqi officials say five people, including four children, were killed Thursday in attacks in Baghdad.
Authorities say a bomb attached to a government worker's car exploded, killing four children inside it and injuring the worker and his wife.
Meanwhile, unidentified gunmen killed an Iraqi army officer and injured at his wife in northern Baghdad. The Associated Press says the officer worked with units that provide protection to Iraqi government officials.
Separately, officials in Baghdad say a police officer was mistakenly killed after Finance Ministry security guards opened fire on a suspicious vehicle.
Some information for this report was provided by AP, AFP and Reuters.