An excellent video showing riverbank collapse in India.
The location is not really clear, but NH53 is the road that links Badarpur in Assam with Imphal in Manipur, India, so I would speculate that it is on that road.
Standing so close to those tension cracks as the main mass collapsed was somewhat foolhardy.
Video is also showing how sometimes people act foolish and are not aware of danger.
It is a luck that there was no retrogression of the landslide mass.