Two police officers say the restaurant is located in the town of Taji, serving travelers on the main highway that links Baghdad to northern provinces. They added that two women and a 12-year old child were among the dead in today's explosion.
A medical official confirmed the casualty figure. All officials spoke on condition of anonymity as they were not authorized to release information.
Taji is a former insurgent stronghold, located about 20 kilometers north of the Iraqi capital.