FACTBOX: Security developments in Iraq, March 19

(Reuters) - Following are security developments in Iraq at 1800 GMT on Wednesday.

* denotes new or updated item.

* DIYALA - One U.S. soldier was killed in what the U.S. military said was a "vehicle rollover" in Diyala province north of Baghdad.

* KERBALA - The bodies of two Iraqi security guards were found in Kerbala, 110 km (70 miles) south of Baghdad, police said.

KIRKUK PROVINCE - U.S. forces mistakenly killed three policemen and wounded another after their vehicle drove at high speed into a cordoned-off area in Kirkuk province, the U.S. military said in a statement.

MOSUL - A suicide car bomber wounded 11 Iraqi soldiers and three civilians in an attack on an army checkpoint in Mosul, 390 km (240 miles) north of Baghdad, police said.

ISKANDARIYA - One policeman was killed and two others wounded by a roadside bomb in the town of Iskandariya, 40 km (25 miles) south of Baghdad, on Tuesday, police said.

BAGHDAD - A car bomb killed a police colonel and wounded one other person in central Baghdad's Karrada district, police said.

BAGHDAD - Gunmen killed the owner of a money exchange and wounded another employee in Karrada, police said. The gunmen also stole $115,000.