Feb 14 (Reuters) - Following are security developments in Iraq as of 1800 GMT on Wednesday:
* Denotes new or updated item.
* BAGHDAD - A transport helicopter that crashed in Iraq last week, killing all seven on board, was brought down by a "sophisticated piece of weaponry", the U.S. military said. The Ch-46 Sea Knight crashed near Baghdad on Feb. 7, the seventh helicopter to be shot down in Iraq since Jan. 20. The military initially said mechanical failure was probably to blame.
* BAGHDAD - Iraqi special forces, with U.S. military advisers, captured a suspected rogue member of the Mehdi Army militia believed to be responsible for kidnapping, torturing and murdering Iraqis, the U.S. military said. Ten other people were detained after Tuesday's raid in central Baghdad.
* DIWANIYA - A former police captain was assassinated in front of his house on Wednesday by gunmen in Diwaniya, 180 km (112 miles) south of Baghdad, police said.
* SAMAWA - Authorities imposed a 9:00 p.m.-6:00 a.m. curfew in the city of Samawa, 270 km (168 miles) south of Baghdad.
RAMADI - A suicide car bomber killed at least five people and wounded 20 others when he blew up his vehicle at the entrance of a police station in the western Iraqi city of Ramadi, police sources said. The officer in charge of the station, Colonel Salam al-Dulaimi, died in the blast.
NEAR BAGHDAD - The U.S. military killed 15 insurgents in two separate air strikes, southwest of the capital in the Arab Jubour area, an insurgent stronghold, the U.S. military said.
BAGHDAD - A car bomb near a hospital killed four people and wounded 10 others in the mainly Christian Camp Sara district of Baghdad, police said.
BAGHDAD - A roadside bomb targeting a police patrol killed a man and wounded three others in the al-Sulaikh district of northern Baghdad, police said.
BAGHDAD - A U.S. soldier died from gunshot wounds sustained on Tuesday just north of Baghdad, the U.S. military said.
BAGHDAD - A car bomb killed two people and wounded seven others in a market in the southern Bayaa district of Baghdad, police said.
BAGHDAD - Several mortar rounds killed one person and wounded 16 others in the northern Rashdiya suburb of Baghdad, police said.
MOSUL - A car bomb killed three people and wounded 20 others in the city of Mosul, 390 km (240 miles) north of Baghdad, police said.
BAGHDAD - A roadside bomb targeting an Iraqi army patrol killed a civilian in the western Yarmouk district of Baghdad, police said.
BAGHDAD - Clashes erupted between gunmen and Iraqi army, wounding three soldiers in the Yarmouk district, police said.
SAMAWA - Gunmen killed a policeman on Tuesday in the southern city of Samawa, 270 km (170 miles) south of Baghdad, police said.