Waiting for Siddhi at central

Came today in the morning by 07:30 to central railway station to pick Siddhi, Rupa and aunty but the arrival time kept on getting updated as the time goes on.
Tamilnadu express too, supposed to have arrived to central by 06:30 am has not yet arrived.
When spoke to Rupa, she said, the train has been stopped for the past an hour or so at an unknown place, probably near to Chennai.
Now, as the board says, it should arrive by 09:15AM. Let's see.... Have a good day.