Criminal intimidation

My brother 34 yearsold has been having an affair with40 something year old recently divorced woman who also used to his colleague at his workplace. He is addicted to smoking and despite protests by my ailing father to stop spreading an excessive amount of smoke in the house causing breathing difficulties, he has remained disobedient. My father is a 65 yr old senior citizen. One day my brother had a very loud fight and started crying behind closed doors. Upon enquiry by me and my mother, he revealed that he was being extorted by his girlfriend for more money. Here i must mention that my brother despite being a working man and earning 80000 per month does not make any financial contributions to our family. Moreover, he stands accused of having extorted money and refusal of repayment of debts by two of his male colleagues at the workplace. He has also threatened a male colleague with defamation via registration of a false sexual harassment case when later asked for repayment of a loan of rs. 10000. The male employee personally met my father and broke down before him after exposing the vituperative chat messages my brother extended towards him to dissuade him from asking for his money back. My father was very ashamed of his sons deeds and asked him to leave the home. His somking also continued to harm my fathers health but he did not stop despite repeated protests. The final breakthrough came on the day of my vrother's fight with his girlfriend. My father who has thyroid and diabetes was frustrated with his fights and legal troubles and therefore asked him to move out of the house. My brother refusing to move out started threatening him with suicide quite a couple of times before actually becoming quiet and moving out of the house with half his belongings. We have not yet registered a case of criminal intimidation. We are lresently living out our daysin fear that should anything bad happen to him via his legal troubles, he might try to falsely incriminate or threat my family with abetment to suicide charges. It should be very clearly mentioned that since the day of his move out we did not jave any contact withhim via phone or whatsapp at all.