Illegal lawyer tenant

My friend is a doctor and was proprietor of a nursing home in Bangalore. Their area got upgraded from Panchayat to Municipal Corporation and following that, the corporation undertook civil works in the locality, like digging five feet on either side of the road for drainage, changing overhead electric lines, etc, and due to that the hospital lost its water sump, and road access. Without proper access to the hospital, without proper water, electricity; he dragged on for nearly one and half year. Civil works went on at a snail's pace, despite him approaching the local politicians. His Bank payments started accumulating, and he had to take loan after loan, just to manage the existing loans without any income for more than a year. Finally, he applied for insolvency in the court and submitted all his assets including the hospital equipment, own house, and all household articles, in 2008. He was allowed to stay in his house in the first floor, and had rented out the ground floor for his day to day living expenses. A lawyer approached him on the pretext of taking the house for Lease. The agreement between them was that the lawyer will a pay a rent of 8000 per month for the first few months, during which time, he will arrange for the Lease amount and then sign the Lease agreement. Hence, the rental agreement was postponed. Even the rent advance cheque of X amount, which was presented to the bank after 3 months, at the request of the lawyer, that he is in difficulty, bounced. Now the lawyer started threatening the landlord, taking advantage of the insolvency proceedings, and bribed the police, and instigated his friends who used to come to the tenants' house in a drunken state, and abuse my friend, for demanding the advance amount. Even the police did not help him when he approached them. The lawyer tenant used to secretly ring up the banks' loan sharks and instigate them to come and illtreat the doctor's wife, when he was not at home. Finally, the family could not tolerate his antics, and went away to a rented place. The lawyer has not paid rent for the last 7 years. Now my friend's problem is how to vacate the illegal tenant? Any suggestions are welcome....Please more