A blast from an explosive device on Sunday killed three members of Iraq's security forces and wounded three others in the northern province of Salaheddin, officials said.
There was no immediate claim of responsibility for the attack in Tuz Khurmatu, which borders a province plagued by sporadic attacks.
Iraq declared victory over the Islamic State group in late 2017, but it remained active in the country, particularly in rural areas.
Sunday's blast killed an army regiment commander, another officer and a security service member, said Zulfiqar al-Bayati, mayor of Tuz Khurmatu.
A security official confirmed the death toll to AFP, adding the victims had been in a vehicle when the explosion occurred.
Those killed were members of the Peshmerga forces of the autonomous northern region of Kurdistan, while the wounded were members from the Iraqi army.
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