"Baghdad's wave of violence leaves at least 20 dead." 

BAGHDAD, Iraq (CNN) -- Insurgent attacks ripped across Baghdad on Thursday, killing at least 20 people, and 24 bodies were found dumped in the capital -- killings that bore the hallmarks of sectarian violence.

The bodies were found in various neighborhoods, police said. The dumping of these remains has been linked with Sunni-Shiite retribution killings.

In the bloodiest attack, at least 10 people were killed and several others wounded when a suicide car blast went off near Iraqi emergency police headquarters in the southeastern Alwiya neighborhood, emergency police said.

Three vehicles and nearby shops were damaged in the bombing. Police said officers were refueling their vehicles in an industrial area behind the police station when the attack took place.   Read here..