FACTBOX: Security developments in Iraq, March 29

(Reuters) - Following are security developments in Iraq as of 1840 GMT on Thursday:

* Indicates new or updated items

* KHALIS - At least three suicide car bombers launched almost simultaneous attacks in a mainly Shi'ite town, killing 53 people and wounding 103, police said. The blasts took place in Khalis, 80 km (50 miles) north of Baghdad.

* BAGHDAD - A suicide bomber killed at least 62 people and wounded 27 in a market in the Shaab district of northern Baghdad, police sources said. Most of the victims were women and children who had been out shopping in the crowded market in the Shi'ite district, a health ministry official said.

* BAGHDAD - The bodies of 25 people were found in Baghdad, a police source said.

* BAGHDAD - Gunmen opened fire on a crowd in Shabab district in southern Baghdad, killing one person and wounding three, a police source said.

* MAHMUDIYA - Gunmen killed an eye doctor as he was leaving work in Mahmudiya, a police source said.

* BAGHDAD - A car bomb killed three people and wounded 16 in Jamiaa in western Baghdad, a police source said, adding that the bomb targeted an army patrol.

* BAGHDAD - A senior academic at Baghdad's Mustansiriya university named Rida Qureishi was kidnapped, a police source said.

BAGHDAD - A car bomb killed four policemen and one civilian and wounded nine more police in Jihad in southwest Baghdad, the U.S. military said. Police were checking a suspicious vehicle when it exploded.

MOSUL - U.S. forces killed four armed men who fired on them during a raid in the northern city of Mosul, the U.S. military said. U.S. forces also detained 15 suspected insurgents in that raid and others around Iraq against al Qaeda targets.

BAGHDAD - A roadside bomb in Bayaa district in southern Baghdad killed three people and wounded 20 others, police said.

MAHMUDIYA - A car bomb killed four people and wounded 20 in a parking lot in Mahmudiya, 30 km (20 miles) south of Baghdad, police said. A local official in the town said eight people were killed and 12 wounded.

MAHMUDIYA - Two mortar bombs landed in a residential district of Mahmudiya, killing two people and wounding seven, police said.

BAGHDAD - Two policemen were killed and six wounded when they approached a car bomb in Amil district in southwestern Baghdad, police said. There was a body in the car.

MOSUL - Police arrested a leader of al Qaeda in Iraq in Mosul, police said.