A suicide car bomber struck a U.S. military convoy in the town of Maqdadiyah in Iraq's eastern province of Diyala on Wednesday, killing a civilian and wounding five others, a provincial police source said.

The attack took place around midday when a suicide bomber drove his explosive-laden car into a U.S. military convoy near a gas station in eastern Maqdadiyah, some 100 km northeast of Baghdad, the source told Xinhua on condition of anonymity.

The source could not give details about whether the U.S. soldiers sustained any casualty as the troops sealed off the area.

The U.S. military has no immediate comment about the incident.

Diyala province, which stretches from the eastern edges of Baghdad to the Iranian border east of the country, has long been a stronghold for al-Qaida militants and other insurgent groups since the U.S.-led invasion of Iraq in 2003 despite repeated U.S. and Iraqi military operations against them.