Find the right ending to this passage.

A Ukrainian journalist working as a freelancer for CNN remains in detention two days after he was detained by pro-Russian separatists. Armed men from the self-declared Donetsk People's Republic seized Anton Skiba outside a hotel in the separatist-controlled city of Donetsk after he had worked for one day with a CNN television crew. Since his detention, CNN has attempted through a number of different separatist officials, including the office of the separatist Prime Minister Alexander Borodai, to secure Skiba's freedom. CNN chose not to report his detention at the time while making efforts to obtain his release. That has not happened to date, so CNN is now publicly asking those who are holding Skiba to release him immediately.

On Wednesday, another high-ranking separatist official told CNN that Skiba admitted to being a "
Ukrainian agent."