Russian-backed forces have suffered huge losses in Donbas over the past day.

"According to reconnaissance reports, the Ukrainian Joint Forces have killed 15 Russian occupiers, while 10 others were wounded," representative of the Joint Forces Operation's (JFO) press center, Lieutenant Colonel Viktor Shubets said at a briefing on Wednesday.

Read alsoUkrainian army destroys enemy's front-line position in Donbas – civil volunteer (Photos)

As UNIAN reported earlier, Russia's hybrid military forces mounted 49 attacks on Ukrainian army positions in Donbas in the past 24 hours, with one Ukrainian soldier reported as killed in action (KIA) and another three as wounded in action (WIA).

As of 07:00 on May 23, it was reported four fighters of the Russian-terrorist forces had been killed and four others were wounded.