Three persons including two RPF constables have been arrested in the connection, while the police have launched a manhunt to nab others involved in the incident.
The police said the incident happened during the early hours at Locomotive Colony in Karbigahiya locality under Jakkanpur police station in Patna.
The deceased labourer has been identified as Rampreet Rai (32), a resident of rural area of the district.
Jakkanpur Station House Officer (SHO) Deepak Kumar said, "As per our information, the three labourers were sleeping under Karbigahiya overbridge. A few RPF constables came there, accused them of theft saying such incidents have increased in their colony and took them to their colony."
The SHO said the two injured have been admitted to Patna Medical College and Hospital (PMCH).
"We have informed Rai's family members. Two RPF constables and another person who assisted them have been arrested. They are being taken to the police station where we will lodge an FIR against them," the SHO said.