KABUL, Afghanistan, June 21, 2010, SPA -- NATO says 4 international troops have been killed in a helicopter crash in southern Afghanistan. Australian Air Chief Marshal Angus Houston said three were Australian soldiers and that seven other Australian soldiers were wounded, two of them badly. A NATO statement says there is no indication of «enemy involvement» in Monday's crash, according to a report of the Associated Press. Australia has some 1,500 troops in Afghanistan alongside NATO forces. Monday's deaths take Australia's military death toll in Afghanistan to 16. --SPA 11:09 LOCAL TIME 08:09 GMT www.spa.gov.sa/794531