Syria : The two suspects are British nationals , police sources say . The man and woman , both 26 , were arrested after arriving on a flight . CNN 's Andrew Carey and Lateef Mungin contributed to this report . Police are also searching their homes in east London . UK Foreign Office says it takes any claims of Britons living in Syria very seriously .
Syria : The two suspects are British nationals , police sources say . The man and woman , both 26 , were arrested after arriving on a flight . Police are also searching their homes in east London . UK Foreign Office says it takes any claims of Britons living in Syria very seriously .