Russia on Thursday (Jan 25) opened a "terrorism" investigation into the deadly plane crash near the border with Ukraine after accusing Kyiv of shooting down the aircraft, in which it claimed to have 60 Ukrainian war prisoners onboard.

Russia starts 'terrorism' investigation into military plane crash

Over 1,000 Ukrainian soldiers who surrendered in Mariupol city and were captured have reportedly been sent to Russia for investigation, Tass News Agency reported quoting a Russian law enforcement source.

More than 1,000 Ukrainian prisoners sent to Russia for investigation

A long-awaited exchange of prisoners between Moscow and Kiev has begun, Russian state television reported on Saturday, broadcasting footage of buses leaving a jail in the capital.

Preparations for Russia-Ukraine prisoner exchange underway: Report