Well, this casts light on a couple of questions we have discussed. First, the RTB did not get involved (but the squatters in this case didn't claim to have a lease). Secondly, the guards did not turn up and simply arrest or evict the squatters.
I can't read the Indo article, which is paywalled, but I see nothing in the blogpost to suggest that the students were in possession for "possibly a couple of years". They told the neighbours that they had taken possession but, by the time they did so, the owner's family were already aware, and had alerted the owner.