Can buyer be made liable for violation against sanctioned plan

I purchased a residential flat upper ground floor in a 4 storey building. Other 3 flats bought by some X.As per sanctioned plan by mcd south zone It has stilt & basement parking but the erstwhile owner and their family made only stilt parking & basement as a closed basement & only one shaft instead of two shafts as required by the sanctioned plan. Now they themselves are making complaints in mcd to demolish the parts deviated from sanctioned plan. Being the wrongdoers themselves can they do so?