Indian Railways — Unknown people occupies railway area for illegal activities

This is happening at Chennai Alandur Railway gate (Closed now - It was named locally as Nidhi School level crossing). The gate is completely not closed and opened for people to cross the tracks. The wall was broken by some illegal people and selling drugs in the night on the track side. It should be closed completely by the authority to restrict the illegal people to enter into track side and do illegal acts.