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. 4 NATO Troops Killed in Afghan Helicopter Crash VOA News 21 June 2010 NATO says four international service members have died in a helicopter crash in southern Afghanistan.  A NATO statement says there are no indications of enemy involvement in Monday's crash. Three of the dead soldiers were Australian. The fourth was from the United States.  The Associated Press said seven Australians were injured in the accident. On Monday Britain announced its 300th fatality in the nine-year Afghanistan war. The Royal Marine was hurt June 12 in an explosion in southern Helmand province. He died Sunday in a hospital in England. In other developments in southern Afghanistan Monday, NATO says two international service members were killed in two separate bomb explosions. NATO did not release their nationalities. .