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Plane crash kills four American service members in Afghanistan

Four American service members were killed Saturday in an airplane crash in southern Afghanistan, a U.S. military official said.

The cause of the crash is under investigation, but the International Security Assistance Force said in a brief statement that initial reports indicated the crash did not involve enemy activity.

The province's police chief told Reuters that bad weather caused the crash in Zabul province in the district of Shahjoi. A U.S. diplomat was killed along with several other Americans in a bomb blast in Zabul province earlier this month.

The Department of Defense on Sunday identified the four Americans that were killed: Captain Brandon L. Cyr, 28, of Woodbridge, Va.; Capt. Reid K. Nishizuka, 30, of Kailua, Hawaii; Staff Sergeant Richard A. Dickson, 24, of Rancho Cordova, Calif.;  Staff Sergeant Daniel N. Fannin, 30, of Morehead, Ky.  

The plane that crashed was an MC-12, a twin-engine turboprop aircraft used primarily for intelligence, surveillance and reconnaissance.