Despite a direct request from the United States to return Edward Snowden to U.S. soil to face charges of leaking government secrets, Russian officials said Monday that they had no legal authority to detain the fugitive former government contractor, who arrived in Moscow on Sunday and was seeking asylum in Ecuador, reportedly by way of Havana.

News services said Snowden was expected to board an Aeroflot flight to Havana, scheduled to depart Moscow’s Sheremetyevo Airport at 6:05 a.m. Eastern time Monday. But reporters on board the flight said on Twitter that he had not been spotted among the passengers.