A spate of overnight and early Monday bombings in Baghdad killed three people, including a police officer and an army soldier, and wounded 20, police officials said. Baghdad police said unknown attackers in a speeding car threw the grenade in the neighborhood of New Baghdad in the capital's east around 6:30 a.m. Monday. The blast killed one policeman and wounded another, a city police official said. A medic at Baghdad's Ibn Al-Nafees hospital confirmed the casualties, according to a report of the Associated Press. Late Sunday, a grenade attack on an Iraqi army checkpoint in Amariyah in western Baghdad, killed one soldier and injured 2 others around 11 p.m., police and hospital officials said. Earlier, a liquor store near central Baghdad was targeted by a roadside bomb that wounded two people around 8 p.m. An hour later, another bomb struck a popular cafe in the capital's southwest. A policeman said that explosion killed one person and wounded 15 people. A medic at the city's Yarmouk hospital confirmed the casualties.