Petro Andryushchenko accused the occupying authorities of seeking to cover up the murder of hundreds of civilians when the building was bombed by Russian warplanes in March.Mr Andryushchenko said the Russians were planning to leave the front of the theatre intact and destroy the rest of the structure, to build a new theatre "on the bones of Mariupol's people".Before Russia invaded Ukraine last February and laid siege to Mariupol, the theatre was a focal point of city life.This year, Russia's proxy authority that runs the city and the occupied areas of the surrounding Donetsk region has promised the city's remaining population alternative entertainment - a revival of a 1960s Soviet cult musical, The Bremen Town Musicians.The BBC reported in November that witnesses had seen Russian authorities removing bodies from the rubble of destroyed buildings and taking them away for burial."