Russian President Vladimir Putin declared a brief Easter ceasefire in his war with Ukraine, a declaration met with skepticism in Kyiv as the war enters a crucial phase and US-led negotiations stall.

Putin said “all hostilities” would halt between 6 p.m. Moscow time on Saturday (11 a.m. ET) and midnight on Monday (5 p.m. Sunday ET).

“We assume that the Ukrainian side will follow our example,” he said, adding that the truce would help Russia determine how sincere Kyiv is about wanting to reach a ceasefire.

However, just hours after the announcement, Ukrainian officials accused Russian forces of continuing to fight.