Meanwhile , nato and afghan officials are investigating a gunbattle saturday that killed two americans and three afghan soldiers .
与此同时,北约和阿富汗官员正在针对星期六导致两名美国人和三名阿富汗人丧生的枪战进行调查。
Afghan officials say security forces have thwarted an attack on the capital , kabul , after killing at least six insurgents in an early morning gunbattle .