FACTBOX-Security developments in Afghanistan, June 4

June 4 (Reuters) - Following are security developments in Afghanistan at 1300 GMT on Wednesday:

* denotes a new or updated item.

KANDAHAR - A suicide car bomber rammed a convoy of NATO-led forces on Wednesday in the southern town of Spin Boldak, killing two Afghan children and wounding three soldiers, police officers said.

KHOST - Another suicide car bomber drove into a government building in the southeastern province of Khost wounding 19 civilians and four police, the Interior Ministry said.

HELMAND - U.S-led coalition troops killed more than a dozen insurgents on Tuesday in the southern province of Helmand after the militants ambushed the soldiers' convoy following a roadside bomb that hit a vehicle, the U.S. military said on Wednesday.

KUNAR - Six Taliban insurgents were killed in clashes with NATO-led and Afghan forces after the militants ambushed their convoy in an area of eastern Kunar province on Wednesday, an Afghan official from the area said. Only one Afghan soldier was wounded in the ambush and clashes, he added.

*HELMAND - U.S.-led coalition troops detained six militants, including a known mid-level Taliban leader, during a search operation in Nahre Saraj district in the southern province of Helmand on Tuesday, the U.S. military said on Wednesday.

*GHAZNI - Coalition forces detained two militants in Ghazni province, south of Kabul, during an operation to disrupt militant activities on Tuesday, the U.S. military said on Wednesday. (Compiled by Sayed Salahuddin and Jonathon Burch; Editing by Sanjeev Miglani)