If it true, then alongwith Vardhaman Jeweller , heads must roll from the BMC office who have given permissions to carry out this kind of structural modifications. It is very unfortunate that people have lost respect for other peoples lives in exchange of few more rupees.Whosoever is responsible for this tragedy has to be caught and punished in most severest way.
p.s.:Also, there are other citizens who should be more vigilant and responsive to whatever is happenning in their respective surroundings.