CAIRO: A Cairo airport official says the first of three American students arrested during a protest in Cairo has left Egypt. Luke Gates, 21, left Cairo early Saturday morning on a flight to Frankfurt, Germany. An Egyptian court ordered the release of Gates, along with Derrik Sweeney and Gregory Porter, both 19, on Thursday. All were studying at the American University in Cairo. The three were arrested on the roof of a university building near Cairo's iconic Tahrir Square on Sunday. Officials accused them of throwing firebombs at security forces fighting with protesters. The other two are expected to leave on separate flights later Saturday morning, the airport official said. He spoke on condition of anonymity because he was not authorized to brief reporters.