brigade willingly laid down their arms and surrendered. reporter: the russian military taking some report orders a tour of the now destroyed theater where hundreds of people had been sheltering when it was hit by a russian air strike last month, according to ukrainian officials. translator: you can see for yourself what the situation in the city is. there are a lot of dead people. reporter: for those still alive, a hellish land scape persists. ukraine s government says about 180,000 people in and around the city still need to be evacuated. so far, many have not been able to do so. reporter: i think we need to highlight what the ukrainian government is saying. you re talking about an unknown death toll at this point in terms of the exact number but they re saying thousands and thousands of people have been killed in mariupol and they re still trying to understand the overall scale of what is happening. it s horrific. and since the humanitarian corridors remain locked, is there