Three people were killed and three others were injured in an attack on the Ukrainian capital of Kyiv on Saturday, according to officials, in a move Russia said was in retaliation for Ukraine using US-made ATACMS missiles.

Russia's military on Tuesday said it would retaliate against Ukraine after Kyiv attacked Russian regions by firing six U.S.-made ATACMS ballistic missiles, six UK-made Storm Shadow cruise missiles and launching one of the biggest drone attacks to date.

Russia has alleged that Ukraine launched another attack using US-supplied ATACMS (Army Tactical Missile Systems), escalating tensions in the ongoing conflict. In response, Moscow has vowed to take necessary measures to counter such actions,