BAGHDAD (AFP) - At least eight people including a policeman were killed and 21 others injured on Tuesday in three separate attacks targeting Iraqi security forces in Baghdad and Mosul, the police said. In northern city of Mosul, four people were killed and four others wounded when a suicide bomber tried to ram his explosives-laden car into a security checkpoint, a local police officer told AFP. In Baghdad, two roadside bombs targeting police patrols killed four people and wounded 17, including women and children, during the morning rush hours. In the first incident, an improvised explosive device detonated near a hospital, killing a policeman and a civilian while two women and two children were among the nine injured, police said. Another roadside bomb that also appeared to target security forces killed two civilians and wounded eight in Al-Harthiyah near the Iraqi capital, an official with the interior ministry said.