The armed robbers who came in a motor-cycle stormed into a nationalised bank at Kasanda under Ranapur police station limits and looted around Rs 3 lakh, Sub-Divisional Police Officer (Sarankul), Jagannath Reddy said.
The three moved out of the bank with the cash after threatening its staff and customers by showing crude bombs and sharp weapons, he said adding that when locals tried to stop them the robbers hurled a bomb.
The identity of the three was yet to be ascertained.