CAIRO (AP) – A Moscow-bound EgyptAir flight returned to the Egyptian capital shortly after takeoff Wednesday after a threatening message was found onboard, authorities said. A statement by Egypt’s flagship airline said flight MS728 had returned safely to Cairo International Airport some 22 minutes after takeoff. The flight was heading to the Russian capital, it said. Citing an unnamed official, the statement said the written message was found on a seat of the Airbus A220-300. It did not elaborate on the content of the message.