Himachal Road Transport Corporation [HRTC] — Lost Laptop through journey

I was travelling from ISBT Delhi Kashmiri gate to Ghumarwin with service no 597 starting date[protected] at 08:00 pm.
I put my black bag in cabin above my seat having laptop with its charger, one watch charger, other belongings inside the bag. Also, i had two to three documents with my name, mobile no, email id, address written on it inside the bag.
When i looked for my bag around 02:00am[protected], it was not there.