FACTBOX-Security developments in Iraq, April 16

April 16 (Reuters) - Following are security developments in Iraq at 0930 GMT on Wednesday.

BASRA - U.S. or British forces launched an air strike killing four militants who fired at Iraqi troops in the southern city of Basra early on Wednesday, a British military spokesman said.

SULAIMANIYA - Turkish bombing of northern Iraq on Tuesday caused no casualties among PKK Kurdish rebel fighters, a spokesman for the rebel group said.

TIKRIT - Police killed seven members of al Qaeda and arrested three other suspects in Balad, 80 km (50 miles) north of Baghdad in a security operation on April 12, the U.S. military said.

ANBAR - Two U.S. Marines were killed on April 14 when a roadside bomb struck their vehicle in Anbar province in western Iraq, the U.S. military said.

BAGHDAD - Police found three bodies in different areas of Baghdad on Tuesday, police said.

KIRKUK - A roadside bomb wounded two guards for a government department in the northern city of Kirkuk, police said.

(Compiled by Khalid Al-Ansary, editing by Dean Yates)