Does anyone know how much of the total BTC are still held within Mt Gox? If MG does indeed implode or go bankrupt, what happens to the BTC it still holds? I fee

Does anyone know how much of the total BTC are still held within Mt Gox? If MG does indeed implode or go bankrupt, what happens to the BTC it still holds? I feel sorry for those who trusted MG with their BTC, but the writing was on the wall a while ago.