Ilegal transgression of society amenities - welfare centre and balwadi

Why did the society allow an encroacher/ transgressor to occupy space in the premises? Such an encroacher /illegal occupant / transgressor may the thrown out of the Society.

As per your contents he seems to be an illegal encroacher or an illegal and unauthorised occupier.

You can take legal action to throw him out and of course you can disconnect water supply and other essential utilities.

How this person happens to be in possession of the premises? Certainly, you have not posted the complete facts.