Municipal Corporation Of Delhi — illegal encroachment in the common passage

Address: New Delhi, Delhi, 110056

To the commisoner mcd. We are resident of d/87 new multan nagar, paschim vihar
Our top floor resident has blocked the common passgae with a steel gate and we are not able to access water tanks and roof for basic needs.in case of fire our life can be at risk.
Its my humble request to please look into this matter before any major accident happened in our house