A bomb targeting police vehicles during the morning rush-hour exploded in central Baghdad killing 10 people and wounding 33 on Wednesday, police sources said.
The casualty toll from the blast in a parked car included two policemen killed and three wounded.
The blast occurred outside the city's traffic police headquarters near Iraq's national sports stadium.
A total of 60 unidentified bodies had been found in various parts of Baghdad over the past 24 hours, an Interior Ministry source said.
The unusually high 24-hour tally was recorded despite a month-old security crackdown in Iraq's capital by US and Iraqi troops.
The Interior Ministry source said most bodies were bound and shot in the head and many bore signs of torture -- trademarks of sectarian death squads and kidnap gangs plaguing the capital.
The United Nations estimated two months ago about 100 people a day were being killed in Iraq in sectarian bloodshed between the country's majority Shi'ite Muslims and minority Sunni Arabs.