Obama administration urges Egypt to protect embassy
* Israel appeals for American help
* Israel ambassador, family, staff fly back to Israel
* At least 450 injured (Adds state TV says ambassador leaves, confrontations continue)
By Sami Aboudi
CAIRO, Sept 10 (Reuters) – Hundreds of Egyptians stormed the building housing Israel’s mission in Cairo and threw embassy documents and its national flag from windows, while state television said on Saturday that Israel’s envoy, his family and staff had been flown home.
The Interior Ministry said at least 450 protesters were injured during a day of confrontations with police, who used teargas and fired in the air in an effort to disperse them. State television said 46 police were injured.
It was the second time the embassy was attacked since five Egyptian border guards were killed last month by Israelis during an operation against gunmen. That incident prompted Egypt briefly to threaten to withdraw its envoy.