Iraqi officials say a suicide attacker has detonated a bomb-laden car in the city of Tikrit, killing at least 12 people and wounding 15 others.
The blast happened Monday outside a compound that houses several palaces built during the rule of the late Iraqi leader Saddam Hussein. Officials say an Iraqi army colonel and several soldiers are among the dead.
The attack follows a series of coordinated bombings in the city last Friday that killed 21 people.
Tikrit is Saddam's hometown and is located about 130 kilometers north of the capital, Baghdad.
Also Monday, officials say gunmen opened fire on several security checkpoints in Baghdad, killing four people.