According to the complaint filed by some passengers of 22691 Rajdhani Express, the incident occurred between Agra and Mathura stations.
"The passengers of A1 and A2 coach of the train were deprived of over half dozen costly mobiles, cash worth about Rs 60,000 and jewelleriesworth lakhs of rupees," said DCM/PRODRM Office Agra Neeraj Bhatnagar.
The miscreants de-boarded the train after pulling the chain in the outskirts of Mathura, he added.
"The exact number of phones taken away by the burglars would be known only after we receive the FIR," said SP Railways Ajai Kumar.
While they claimed it was a "theft", neither the police nor the railway officials could give details on the modus operandi of the miscreants.
"It is not loot. It is simply theft and we would work out it shortly," said Deputy SP Raj Kumar Gautam.