They looted Rs 3.69 lakh from ATM of UCO bank in Nagauri Garden, which is an isolated place in the city there, Kotwali police said.
He said no guard was deployed at the ATM when the incident happened.
Robbers allegedly used gas cutter to open the machine and fled with the cash amounting to Rs 3.69 lakh in the cover of night, police said.
UCO bank has lodged an FIR with the Kotwali police station this morning, police said.