"A military plane from the air force of the Russian Federation carried out a rocket strike on a Ukrainian airforce SU-25 as it fulfilled its task over the territory of Ukraine," Ukraine's National Security and Defence Council said on Twitter.
The pilot of the downed fighter jet managed to eject and was later evacuated by Ukrainian forces, the military said.
The latest allegation from Kiev comes after it said that a military transport plane downed Monday was "likely" hit by a missile fired from the Russian side of the porous border.
