Originally posted by the Voice of America. Voice of America content is produced by the Voice of America, a United States federal government-sponsored entity, and is in the public domain. Afghan and NATO Officials: 4 Afghan Soldiers Killed in Joint Force Air Strike VOA News 30 January 2010 Afghan and NATO officials say a coalition air strike has "likely killed" four Afghan soldiers. Military officials say joint force of Afghan and coalition soldiers came under fire early Saturday morning and called in the air strike. NATO and Afghan officials say their initial investigation after the air strike indicates the small arms fire originated from an Afghan National Army outpost. Brigadier General Eric Tremblay, an coalition spokesman, called it a regrettable incident. He said joint forces "work extremely hard" to synchronize their operations. An Afghan Ministry of Defense spokesman says the International Security Assistance Force and the Afghan army will conduct a joint investigation into what he termed an "unfortunate accident." Some information for this report was provided by AP and Reuters. .