Estranged husband occupying rental property in my name

I moved out of my husband's house in Kolkata with my 2 daughters on 1st Oct and rented a flat on my name. In Dec, I was told that he is a changed person and needs medical care, so on 1st Jan he came to stay with us in my rented flat. But within 2 weeks he again went back to being the same old abusive husband and father. I was again forced to leave my flat with my daughter for our safety, and moved in with a friend. I then took a decision to move to Bangalore (where my brother stays) and start my life afresh. I notified the landowner that I would be vacating her flat by March end. This was informed to my husband so he can find another place to stay as the rental agreement is on my name, and the landlady does not want my husband to stay there. But now even after more than a month he has not moved out and my landowner is asking me to get her flat vacated. I am too scared to confront my husband face to face as he gets very aggressive and has also threatened me multiple times. What are my options, how do I get him to vacate that flat?