Nuisance created by a member in housing society

If your society is registered under societies act then president, secretary and treasurer can make a law barring him from even stepping out of the house into common passage. This is an Adhoc measure fully legal you can make immediately. You may alternately get duplicate keys done for all those locks or new locks totally and send a demand notice bill for those costs. Next make an official by-law in your society rules document. This will say nobody other than office bearers can touch apartment keys. With some penalties. Obviously an all owners meeting (GBM) must be called and get majority vote. This meeting notice will also go to the trouble maker. Let him face all other owners if he had courage. In any case make the law and pass with majority. Record the attendance and meeting minutes accurately. He can't come out of his door. Per society registration act those 3 office bearers are like owners of the building for their elected terms. Even if trouble maker lodges a police case they can't change a majority passed rule. Then secretary, president and treasurer call for committee meeting that is, office bearers for that term and pass more majority rules barring water and power to that flat. Here you don't need to involve every single owner. It is 100% legal. If you are registered under apartment owners act of your state, you can make the same majority laws as above. But you can't cut off his water and power unless he is also a part of the meeting which decides this. He will obviously oppose. But if all others agree then water and power can be cut.