Iraqi officials say two gunfire attacks in and near Baghdad have killed four people and wounded three.

A police officer says gunmen in a speeding car opened fire on an outdoor vegetable market in the town of Mishahda, killing three civilians and wounding three others. The town is 30 kilometers (20 miles) north of the capital.

Also, police said drive-by shooters killed a police officer driving his car in Baghdad's northern neighborhood of Shaab.

There were no immediate claims of responsibility. Insurgents routinely target Iraqi police and security forces in an attempt to undermine Iraq's government. Attacks on civilians are often sectarian in nature.

Two health officials confirmed the casualty figures. All officials spoke on condition of anonymity as they were not authorized to release information to reporters.

By SINAN SALAHEDDIN Associated Press