(CNN) -- Bombings in central and western Iraq killed at least seven people and wounded 45 others on Sunday, the Interior Ministry said.
In an attack south of Baghdad, a motorcycle rigged with explosives blew up in the predominantly Shiite town of Mussayyab. At least five people died in the marketplace bombing. Another 37 were wounded, according to the ministry.
Mussayyab is in Babil province, about 40 miles (60 km) south of Baghdad.
In another attack, insurgents detonated a pair of car bombs in the western city of Ramadi, the ministry said.
The vehicles exploded near the headquarters of the city's traffic police. Two people were killed and eight people were wounded in the bombing.
In the past, the city of Ramadi, the provincial capital of Anbar, was the scene of some of the fiercest fighting between the U.S. military and Sunni insurgents. The overall security situation in Ramadi, as well as the rest of the province, has dramatically improved since 2007, but there has been an increase in sporadic violence in recent months.
Ramadi is about 64 miles (100 km) west of Baghdad.
Late Saturday, mortars slammed into southern Baghdad, wounding at least nine people in the capital's Dora district, the ministry said.
CNN's Jomana Karadsheh contributed to this report.