美國警告航空公司注意可能藏在鞋中的炸彈

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.美國政府向各航空公司發出警告說，飛往美國的國際航班面臨潛在的鞋中炸彈威脅。

美國國土安全部星期三說，根據可靠的近期情報發出了上述警告。情報顯示，襲擊者企圖利用藏在鞋中的爆炸物攻擊客機。

三個月來，這是美國政府第二次警告可能存在針對商業航班的爆炸威脅。

美國情報消息人士說，國土安全部向各航空公司發出通知，重申要注意液體、鞋子和某些化妝品，而美國交通安全管理局的現行安全條例都列入了這些物品。

美國全國廣播公司星期三首先報道了這項警告。目前還不清楚這一警告是否與早些時候飛往俄羅斯的航班受到的威脅有關。

本月早些時候，美國國土安全部警告說，飛往俄羅斯的航班要注意檢查可能藏在牙膏筒裏的爆炸裝置。