An emplyee works at the reception desk in the Capsule Hotel "Air Express" inside Moscow's Sheremetyevo terminal F in Moscow on June 26, 2013, where US intelligence leaker Edward Snowden reportedly spent the fourth day with his onward travel. The man responsible for one of the biggest intelligence security breaches in US history has not been sighted since arriving in Moscow on a flight on June 23 from Hong Kong and according to Russia is still in a transit zone at Sheremetyevo airport.