A top secret letter obtained by the news organization al-Masry al-Youm states that elements from the group Global Jihad have been planning attacks on the two embassies.
The letter addressed to a top Egyptian security official was forwarded to all security sectors across Egypt, al-Masry al-Youm reported Tuesday.
There was no word on when the attacks were supposed to take place.
Global Jihad has been accused by Israel of perpetrating the August 5th attack against Egyptian border guards in Sinai that left 16 dead.
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