The victim, Puranmasi, of Dumari village was standing in the queue at the Sahatwar branch of State Bank of India yesterday when he tried to place his bag on a nearby trolley-mounted transformer of the bank, SP R P Singh said.
He was electrocuted and died on the spot, police said.
The body has been sent for postmortem and a case has been lodged against unidentified persons for negligence, they added.