美国警告航空公司注意可能藏在鞋中的炸弹

The U.S. government has warned airlines about a potential shoe bomb threat on international flights to the United States.

The Department of Homeland Security said Wednesday it issued a warning based on "very recent intelligence" considered credible that assailants would try to attack passenger jets using explosives hidden in shoes.

It is the second time in three months that the government has issued a warning about possible attempts to smuggle explosives on a commercial jetliner.

U.S. intelligence sources said the DHS released a notice to airlines reiterating that liquids, shoes and certain cosmetics were of concern, all of which are covered under existing Transportation Security Administration security policies.

It is not clear if the latest warning, first reported Wednesday by NBC News, is related to earlier threats to Russia-bound flights.

Earlier this month, the DHS warned airlines with flights to Russia to be on the lookout for explosive devices possibly hidden inside toothpaste tubes.

美国国土安全部星期三说，根据可靠的近期情报发出了上述警告。情报显示，袭击者企图利用藏在鞋中的爆炸物攻击客机。

三个月来，这是美国政府第二次警告可能存在针对商业航班的爆炸威胁。

美国情报消息人士说，国土安全部向各航空公司发出通知，重申要注意液体、鞋子和某些化妆品，而美国交通安全管理局的现行安全条例都列入了这些物品。

美国全国广播公司星期三首先报道了这项警告。目前还不清楚这一警告是否与早些时候飞往俄罗斯的航班受到的威胁有关。

本月早些时候，美国国土安全部警告说，飞往俄罗斯的航班要注意检查可能藏在牙膏筒里的爆炸装置。