Police in Egypt have arrested an Egyptian-American academic discovered to have several weapons in his luggage as he arrived on a flight from the US.
Officials said they saw the man, named as Mohammed Ibrahim Marei, a professor of botany, "behaving nervously" as he waited to pass through customs.
In his bags they found two handguns, 250 bullets, several swords, daggers and knives.
He had arrived on an Egyptair flight from New York to Cairo.
The authorities said they had launched an investigation, it was reported.
It was not immediately clear how the man was able to get through security in New York and board the plane.
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