Embassy says it received unconfirmed threat information . CNN 's Ric Ward contributed to this report . The U.S. State Department has issued a travel alert for the United States and its citizens in Egypt, warning of "heightened security concerns" following recent attacks on Coptic Christian churches across Egypt. The airline says it has added additional security measures .
Embassy says it received unconfirmed threat information . The U.S. State Department has issued a travel alert for the United States and its citizens in Egypt, warning of "heightened security concerns" following recent attacks on Coptic Christian churches across Egypt. The airline says it has added additional security measures .