Sudhir Kumar, hailing from Uttar Pradesh, was held by a team of CID when he was roaming in the area last night.
He was later handed over to the local Kotegate police station where he was interrogated.
"The man in a monk's attire was carrying a file having hand written information related with army, description on tank and other devices," SHO Kotegate Govind Ram said.
"It is not clear whether he is a spy and things will be clear only after thorough interrogation," he said.
