A sub-inspector of the Border Security Force (BSF) on duty at a polling booth in the Lalganj assembly seat died of heart attack Tuesday, the police and hospital sources said.
The security man felt acute pain in chest while he was on duty at booth number 191 following which he was taken to Hajipur sadar hospital, they said.
On reaching the hospital, the doctors declared him brought dead, the sources added.
The 55-year-old dead person has been identified as KR Bhai, a resident of Vadodara in Gujarat.
He was posted with the BSF in Gujarat and was deployed at a polling station in the Lalganj constituency in Vaishali district where voting is in progress Tuesday.
The town police has recorded statement of the BSF personnel in this connection, the sources said.