A mob in West Bengal's Pipultala village under Harishchandrapur police station caught Pratap Mandal, tied his hands and legs with ropes and iron chains and severely assaulted him on Friday night.
Mondal was a resident of the neighbouring Malior village. He was first taken to a local hospital from where he was referred to Chachal Super Speciality Hospital. Later Saturday night, he succumbed to injuries.
His body was sent for a postmortem on Sunday.
Inspector in-charge of Harishchandrapur police station Sanjay Kumar Das said that the investigations were on and the culprits would not be spared.
His mother Sanju Mondal claimed her son was not a thief and demanded exemplary punishment for the killers.
(With PTI Inputs)