MOSCOW -- The Russian Armed Forces have struck Ukrainian military objects with air- and sea-based cruise missiles, Russian Defense Ministry spokesman Igor Konashenkov said on Saturday.

"During the night, the Russian Armed Forces carried out a long-range precision strike with air- and sea-based cruise missiles on Ukrainian military infrastructure facilities," Konashenkov said, according to a statement of the Russian Defense Ministry.

"I would like to emphasize once again that only military facilities are subject to attack, no damage is caused to residential and social infrastructure," he added.

On Thursday, Russian President Vladimir Putin had authorized "a special military operation" in Donbass, and Ukraine confirmed that military installations across the country were under attack.