Ukraine says it has downed a Russian A-50 military spy plane - the second such claim in just over a month.

The plane was hit between the Russian cities of Rostov-on-Don and Krasnodar, Ukrainian military sources said, over 200km (124 miles) from the front line.

Emergency services reportedly found plane fragments in Kanevskoy district and put out a raging fire.

Russia has not commented on the claim. Saturday marks two years since Russia launched a full-scale invasion.

The head of Ukraine's Air Force Mykola Oleshchuk thanked his service and military intelligence for helping to bring down the plane - a long-range radar detection aircraft - on Friday and noted the incident coincided with a key Russian military holiday.

Krasnodar's emergency authorities later said an aircraft had crashed near the Trudovaya Armenia village, Kanevskoy district, and a fire was later extinguished. It provided no further details.

Meanwhile, at least one Russian military-aligned Telegram channel suggested the plane may have come down as a result of friendly fire. Fighterbomber wrote: "At the moment it is unknown who shot it down."

Ukraine last claimed to have shot down an A-50 on 14 January.