Suicide bombers attacked the city council headquarters in the Iraqi city of Samarra on Tuesday, took employees hostage and eventually blew themselves up, killing a total of five people.

The attack, which followed a similar operation last December, illustrates the impunity with which militants in Iraq can strike even targets that should be highly secure, as the country suffers its worst violence in years.

Two bombers dressed in police uniforms shot dead a policeman and took control of the council headquarters with employees inside, a police lieutenant colonel said. […]