KABUL, Afghanistan, Sept 24, SPA -- NATO says its aircraft killed 23 suspected insurgents in southern Afghanistan over the last several days. A NATO helicopter attacked 20 insurgents who shot at a NATO patrol in Helmand province on Friday, killing 15 of the suspected insurgents. A NATO statement says an attack helicopter fired on another group of insurgents who shot at a support helicopter on Thursday, killing eight of the militants in another district of Helmand province. There were no NATO casualties, the Associated Press reported.--SPA www.spa.gov.sa/391996