Police say a roadside bomb exploded around 6:30 p.m. Thursday in the upscale and mostly Shiite neighborhood of Karradah, killing two passers-by.

Police who rushed to the scene were hit with a second blast, killing two policemen and wounding three others. Also, four passers-by were wounded.

The casualties were confirmed by a medic at Ibn Al-Nafis hospital. The officials spoke on condition of anonymity because they were not authorized to release the information.

Earlier Thursday, bombs in Iraq’s northeast Diyala province killed at six security guards and wounded 35 people.