BAGHDAD — Explosions targeting public markets and security checkpoints killed 44 people across Iraq on Sunday, including 20 in a northern Turkmen-dominated city, and wounded over 100, police and medical officials said.

In Tuz Khurmato, whose population is 70 percent ethnic Turkmen, a suicide bomber detonated his explosives at a police checkpoint, killing three police officers and wounding seven others, and a second suicide bomber was killed by the police. A few minutes later, eight homemade bombs were detonated elsewhere in the city, killing 15 civilians.

Arshad al-Salihi, the head of the Turkmen Front, a political party, blamed Arabs and Kurds for the violence. “It is clear that the explosions have political benefits behind them,” he said at a news conference. Northern Iraq was the site of two other attacks on Sunday. In Kirkuk, two soldiers were killed when a bomb exploded at an army checkpoint. In Mosul, a bomb planted near a soldier’s house killed two civilians.

Later in the afternoon, eight explosions hit Baghdad and the surrounding district, killing 22 people and wounding dozens of others, security officials said.