FACTBOX - Security developments in Afghanistan, April 4

(Reuters) - Following are security developments in Afghanistan at 5:30 a.m. EST on Saturday:

* Denotes new or updated incident

* SOUTHERN AFGHANISTAN - A NATO soldier was killed in a bomb blast in southern Afghanistan, the alliance said, without giving details of the location or the nationality of the soldier.

HELMAND - Afghan and U.S.-led coalition forces killed 20 insurgents in a series of operations in Kajaki, some 475 km (295 miles) southwest of Kabul on Friday, the U.S. military said.

KHOST - Afghan troops captured a Taliban commander responsible for facilitating suicide bombings and roadside bombs in the Lagharah Valley, some 150 km (95 miles) southeast of Kabul, the U.S. military said.

(Reporting by Jon Hemming; Editing by Jeremy Laurence)