A wave of car bombings and other attacks mainly targeting Shiite areas of Iraq killed at least 47 people on Tuesday, including more than 20 in the capital Baghdad, officials said.

No one claimed responsibility for the attacks, which were likely carried out by Sunni militants. The extremist Islamic State group, which seized a third of the country in a lightning offensive over the summer, has claimed similar previous attacks.

In the deadliest attack, a car bomb in northwestern Baghdad killed eight people and wounded 15. Another car bomb in a different area killed seven and wounded 21, and a mortar attack killed seven and wounded 13 elsewhere in the capital, police said. All three attacks targeted Shiite-majority areas. […]