Bengaluru, Nov. 2 -- Investigators are examining an underwater swimming pool lighting failure in connection with the death of two European guests due to electrocution at a Bengaluru hotel, officials familiar with the matter said. The Karnataka State Electrical Inspectorate is examining a switch-mode power supply (SMPS) device that may have allowed electricity to leak into the water, an official said. "This unit converts high-voltage alternating current (AC) into low-voltage direct current (DC) used by underwater LED lights. A failure in the unit or its wiring connections could have allowed current to escape into the pool," the official, who spoke on conditions of anonymity, said. Alexander Maximilian Theiss, 52, a German national, and Juraj Horvat, 45, a Slovak national, died on Friday at Bengaluru's Conrad hotel when someone switched on the lights. Two persons were injured....