Russia , which supports Damascus , expressed its own reservations . NEW : The UK Foreign Office says it 's aware of the incident . A family member of the woman says the FBI said she was in Afghanistan . The FBI also showed what it said was a Michigan driver 's license and passport . It claimed it belonged to a dead American woman fighting with the rebels .
NEW : The UK Foreign Office says it 's aware of the incident . A family member of the woman says the FBI said she was in Afghanistan . The FBI also showed what it said was a Michigan driver 's license and passport . It claimed it belonged to a dead American woman fighting with the rebels .