The bomb went off on platform 10 around 10.30 a.m., hours before the start of BJP's prime ministerial candidate Narendra Modi's rally at the Gandhi Maidan, about two-three kilometres away, police said.
Two people were injured in the blast, and one of them succumbed to his injuries. The injured man was warded in the Patna Medical College and Hospital.
Senior Superintendent of Police Manu Maharaj said police also recovered two live bombs from the area.
After the incident, police appealed to people, particularly those gathered for the Modi rally, not to touch suspicious objects.
Police did not say if there was a link between the explosion and the Modi meeting.
Congress spokesman Rashid Alvi called the bomb explosion "extremely unfortunate".
--IANS (Posted on 27-10-2013)