In Europe this would have been a non event. A fuel emergency followed by an autoland in weather below CAT 1.
In India, an autoland on a CAT 1 runway is not the smartest thing to do. On most ILS approaches the LOC is so unstable you nearly get sea sick before you land.
This was most likely an autoland in below CAT 1 weather that ended bad. Or they tried to hand fly in low vis conditions.
Either way, they quickly ran out of options. Not a nice situation to be in.