Developments in Iraq, March 7

March 7 (Reuters) - The following are security incidents and political developments in Iraq as of 1100 GMT on Tuesday.

U.S. and Iraqi forces have been battling a Sunni Arab insurgency against the Shi'ite- and Kurdish-led government in Baghdad since U.S. troops toppled Saddam Hussein in 2003.

A wave of sectarian violence since a bombing of a Shi'ite shrine on Feb. 22 has killed hundreds.

Asterisk denotes a new or updated item.

*BAQUBA - Gunmen killed three members of radical Shi'ite cleric Moqtada al-Sadr's office in Baquba, police and hospital sources said. Two other members were wounded.

*BAGHDAD - Three mortar rounds landed on the headquarter of National Dialogue Front, a Sunni Arab party headed by Salih al-Mutlak. No casualties were reported.

*KIRKUK - Three students and a soldier were wounded when a roadside bomb exploded as an Iraqi army patrol drove by Kirkuk University in central Kirkuk, 250 km (150 miles) north of Baghdad, police said.

*HAWIJA - A policeman was killed and another wounded in a drive-by shooting on the Kirkuk-Hawija highway, 60 km (40 miles) southwest of Kirkuk, police said.

BAGHDAD - Five civilians were wounded when a car bomb exploded in southern Baghdad, police said. The target of the explosion was not clear.

BAGHDAD - A civilian was killed and his wife was wounded when a car bomb struck at a U.S. patrol in western Baghdad, police said.

BAQUBA - A car bomb killed one civilian and wounded three police officers. The policemen had arrived at the scene after gunmen had killed a policeman on a patrol.

HILLA - Three traffic policemen and four civilians were wounded when a car bomb went off in central Hilla, 100 km (60 miles) south of Baghdad. Another car bomb exploded in northern Hilla but no casualties were reported.

BALAD - A policeman was wounded when four mortar rounds landed in and around Balad police station in Balad, 90 km (55 miles) north of Baghdad, police said.

BAIJI - Three policemen were killed and four were wounded when gunmen attacked their patrol in the oil refinery city of Baiji, 180 km (110 miles) north of Baghdad, police said.

TIKRIT - A Sunni shrine was destroyed on Monday when gunmen planted bombs inside it in the city of Tikrit, 175 km (110 miles) north of Baghdad, police said.