LVIV, Ukraine (AP) Ukrainian authorities said Sunday that Russias military bombed an art school sheltering some 400 people in the embattled port city of Mariupol, where Ukraines president said an unrelenting Russian siege would be remembered for centuries to come.

It was the second time in less than a week that city officials reported a public building where residents had taken shelter coming under attack. A bomb hit a Mariupol theater with more than 1,300 believed to be inside on Wednesday, local officials said.

There was no immediate word on casualties from the reported strike on the art school, which The Associated Press could not independently verify. Ukrainian officials have not given an update on the search of the theater since Friday, when they said at least 130 had been rescued.