At least seven people, including three policemen, were killed in separate attacks in the Iraqi capital Baghdad on Friday, dpa cited local media and security sources as saying. Four people were killed and 50 injured in a rocket attack on a market in northern Baghdad and gunmen attacked a police checkpoint in the district of al-Baya in the south of the city, killing three policemen, the Alsumaria News website said. At least 70 people were killed on June 13 in bomb attacks in Baghdad and other cities.