Insurgents in Iraq targeted government security forces in a series of coordinated attacks that killed at least 55 people Wednesday.

The bloodbath started in Baghdad and spread to several Iraqi cities.

The deadliest attack came in Kut, 100 miles southeast of Baghdad. A suicide bomber there blew up a car inside a security barrier killing 15 policemen and four others.

The terrorist attacks raise concerns that Iraq is not ready to handle its own security.

U.S. troop levels in the country have been reduced to the lowest level since the start of the war.

No group has claimed responsibility for the recent attacks.