Baghdad, Iraq (CNN) -- A series of roadside bombings in Baghdad killed at least four people and wounded 21 others Tuesday, police said.
Three bombs went off in quick succession at about 3 p.m. in the predominantly Shiite Baghdad neighborhood of Bayaa, killing two people. A few minutes later, two more people died when a couple of bombs exploded near an Iraqi police patrol in the same area of southwestern Baghdad.
Bomb squads defused another two roadside bombs, officials said.
CNN's Mohammed Tawfeeq contributed to this report.