Fourteen people have been killed and dozens of others wounded as a fresh wave of violence hits the shattered Iraqi capital of Baghdad.

Five prisoners were killed at a holding cell on a base in eastern Baghdad's Rusafa district on Monday, the US military said.

Several rockets were fired at the facility, at least one of which was on target. Twenty-five people were wounded in the attack.

Two civilians were killed when gunmen fired into their car from another vehicle in Karrada district, Interior Ministry officials said.

In another attack in the same area, two mortars landed in the neighborhood and wounded three civilians.

In eastern Baghdad's Baladiat district, five people -four of them police officers- were wounded when a roadside bomb detonated near an Iraqi national police convoy.

Earlier on the day, mortar shelling of an Interior Ministry prison killed at least seven inmates and seriously injured 23 others including five police officers, a ministry official said.

JS/DT