I think it is Shoranur, not Sollur
Here is the Malayalam news version: /news/post/160278
This news report says Ayyappa devotees from AP protested when a police constable boarded the train from SRR to go to PGT, saying that it was their reserved coach and no one else can board the coach. Then the constable called other police officers and an argument broke-out, resulting in the arrest of the protestor and when the train was about to start, the fellow-passengers pulled the chain and sat on the tracks. Finally the protestors were removed...
more... and train left with an hour delay.
But this Report says, it happened in ALLP-DHN Exp, not Sabari Exp