Iraqi police say the toll from a double-bombing in eastern Baghdad that targeted traffic police has increased to at least 18 people dead and 52 others wounded.

An Iraqi police official says the first blast Wednesday morning was from a car bomb. Moments later, a roadside bomb went off nearby targeting people rushing to the scene.

The official spoke on condition of anonymity because he was not authorized to speak to the news media.

The U.S. military says a roadside bomb exploded near an American patrol hours earlier in the same area but that there were no deaths or injuries.