FACTBOX: Security developments in Iraq, May 29

(Reuters) - Following are security developments in Iraq at 1800 GMT on Tuesday:

* denotes new or updated item.

BAGHDAD - At least 23 people were killed and 68 others wounded when a powerful bomb in a parked bus exploded in central Baghdad, police said.

BAGHDAD - At least 18 people were killed and 41 wounded when a car bomb exploded in a busy market of a mainly Shi'ite neighborhood in southwestern Baghdad, police said.

* BAGHDAD - Gunmen dressed as police abducted a group of Westerners from inside a finance ministry building in Baghdad, police and witnesses said. British officials later said five Britons had been kidnapped.

* DIYALA PROVINCE - Two U.S. soldiers were killed when their helicopter went down under enemy fire in Diyala Province on Monday, the U.S. military said. Another six soldiers were killed when roadside bombs hit their vehicles while they were on their way to the crash site.

* BAGHDAD - Two U.S. soldiers were killed when their patrol was hit by a roadside bomb in southern Baghdad on Monday, the U.S. military said.

BAQUBA - The bodies of 21 people were found shot dead in two different districts of Baquba, 65 km (40 miles) north of Baghdad, police said.

SUWAYRA - Police retrieved the bodies of five men, two of whom were decapitated, from the Tigris river in the town of Suwayra, 40 km south of Baghdad, police said.

SHIRQAT - Gunmen killed two policemen and wounded three in the town of Shirqat, 80 km (50 miles) south of Mosul, police said.

SHIRQAT - A roadside bomb targeting a police patrol killed two policemen and wounded three others on Monday in Shirqat, police said.

KIRKUK - Gunmen killed Mahmoud Hakim Mustafa, the editor-in-chief of Hawadith weekly newspaper, on Monday near his home in the northern city of Kirkuk, 250 km (50 miles) north of Baghdad, police said.

BAGHDAD - U.S. forces detained 14 suspected insurgents, including the suspected al-Qaeda leader of a violent western Baghdad neighborhood, during operations in the capital, Mosul and Taji, the U.S. military said.