A roadside bomb in Baghdad hits a convoy carrying members of the Sadr bloc.
Elsewhere in the country, a roadside bomb hit an Iraqi army patrol and wounded an army official.
The blast occurred in a main street near the town of Sulaiman Pak, 160km northeast of Baghdad, police said.
Five policemen and two civilians were wounded when a roadside bomb exploded near a police patrol in the New Baghdad district of eastern Baghdad, police said.
In yet another incident, a roadside bomb wounded three policemen and one civilian when it exploded near a police patrol in Qahira district of northern Baghdad, police said.