FACTBOX: Security developments in Iraq, May 13

(Reuters) - Following are security developments in Iraq at 4:00 a.m. EDT (0800 GMT) on Tuesday:

BAGHDAD - Eleven people were killed and 20 wounded in clashes and shelling overnight in the Shi'ite district of Sadr City in eastern Baghdad, police and hospital sources said. They gave no details on those killed, but said the wounded included women and children.

BAGHDAD - The U.S. military said its troops were attacked numerous times in Sadr City overnight. A spokesman said troops killed at least three gunmen.

NEAR MAHMUDIYA - A roadside bomb attack on a police patrol killed one policeman and wounded three others on Monday near Mahmudiya, 30 km (20 miles) south of Baghdad, police said.

NEAR BAQUBA - Gunmen abducted six university students from a minibus near Baquba on Monday, police said. Baquba, the capital of Diyala province, is 65 km (42 miles) north of Baghdad.

MOSUL - A bomb blast wounded two children in southeastern Mosul, 390 km (240 miles) north of Baghdad, police said.

BAGHDAD - Gunmen killed an army officer, Brigadier-General Nibras Fadhil Abbas, in a drive-by shooting on Monday in Nisoor square in central Baghdad, police said.

BAGHDAD - A roadside bomb wounded five civilians in the Karrada district of central Baghdad, police said.

NASSIRIYA - A mortar attack killed a woman and wounded three people including a child in Nassiriya on Monday, police said. Nassiriya is 375 km (235 miles) southeast of Baghdad.

(Compiled by Aws Qusay, Editing by Dean Yates)