Ukraine crisis: BBC witnesses "surrender" in Sloviansk
The BBC has filmed Ukrainian armoured vehicles, which the government says were seized by pro-Russian militants in the east.
The Ukrainian troops appear to have been disarmed before being fed by pro-Russian militants at a cafe in Sloviansk, and then put on a bus back to their home city of Dnipropetrovsk.
The incident comes a day after the military began an operation to remove pro-Russian protesters from public buildings across eastern Ukraine.
Gabriel Gatehouse reports from Sloviansk for BBC Newsnight.