A pair of car bombs intended for the Iraqi police chief in Beiji and a “concerned citizens” group leader failed to reach their targets but killed at least 14 others and wounded dozens more, U.S. military officials said Wednesday.

The suicide car bomb attacks took place Tuesday at the residences of the two men in the northern and eastern sections of the city, which is northwest of Tikrit, officials said.

The first bomb killed seven people and injured at least 21 others, destroying at least two homes in the area. The police chief was not injured in the attack, American and Iraqi officials said.

In the second attack, at least five Iraqi police and two civilians were killed — and two police and 19 civilians injured — in the attempt on the leader of the “concerned citizens” group.

U.S. military officials have used that phrase to describe armed civilians who have begun working with American and Iraqi forces to provide security in some areas of Iraq.

The group leader was not injured, officials said.

Iraqi police have taken the lead in investigating the attacks.

The suicide bombings are the latest in a string of attacks on top Iraqi security officials and civilians — including tribal sheiks in Anbar province.

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