No explosives in US-bound parcels at Cairo airport, Egypt officials say
Egypt on heightened alert since terrorists downed passenger plane last month.
Egypt's Prime Minister Sherif Ismail (4rth R) at the remines of a plane crash at the desert in central Sinai near El Arish city north of Egypt, October 31, 2015(photo credit: (AICF/CHRIS LEE))ByREUTERS