BAGHDAD — At least 32 people were killed in Iraqi towns and cities on Tuesday, security sources said, the latest flare of violence in a country where sectarian attacks have become a frequent occurrence.

Two suicide bombers detonated explosive belts, one after the other, targeting Shiite Turkmen who had cut off the road between Kirkuk and Baghdad to protest the deteriorating security situation in the district of Tuz Khurmatu, in the east of Salahuddin province.

At least 16 civilians were killed and 53 were wounded, the sources said. The deputy governor of the province and the vice president of the Turkmen Front party were among those killed, they said.

Security forces imposed a curfew in Tuz Khurmatu and ordered people to close their shops.

Security sources also reported attacks in at least three other locations.