（华盛顿25日综合电）美国大峡谷国家公园（Grand Canyon National Park）近日遭受极端高温天气，高温飙破华氏3位数。当局证实近日有3名高龄登山客疑因高温引发的热伤害不幸丧命，目前相关部门正展开调查。
美国国家公园管理局6月19日证实，首起死亡个案为一名72岁男子，他于6月12日在南凯巴布步道（South Kaibab Trail）死亡。随后在16日，搜救人员又于北凯巴布步道（North Kaibab Trail）寻获另外两名死者，分别为一名67岁男子与一名68岁女子。这两起事件均发生在步道深处，死者身分尚未对外公布。
大峡谷国家公园官员表示，这3名登山客在搜救队抵达前便已失去生命迹象，遗体已被送往科科尼诺县（Coconino County）法医办公室以厘清确切死因。
随着高温事件急遽增加，园方强烈警告，内峡谷极端高温已达危险等级，峡谷内的阴凉处温度也高达华氏109度（约摄氏42.8度），登山客应避免在上午10点至下午4点之间进入相关步道。
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