A total of 83 people were also injured in the bomb explosions between 9:30 am and 11:45 am in which timers were also used.
Just a couple of hours before the six multiple explosions, a crude bomb went off in a newly constructed toilet at Platform 10 at the Patna railway station, two km from the venue BJP's 'Hunkar(battle cry) rally' of the party's prime ministerial candidate.
Prime Minister Manmohan Singh condemned the blasts and appealed for calm. He spoke to Bihar Chief Minister Nitish Kumar and asked him to speedily probe the blasts and ensure that the perpetrators are punished.
Five people died from blast injuries, according to Vimal Karak, Deputy Superintendent of Patna Medical College Hospital.
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Nitish said the timing of the blasts on the day of his Gujarat counterpart's rally was "very worrying", adding it appeared to be a "deliberate attempt" to vitiate the atmosphere in the state.
Stating that the bombs which exploded were of low intensity, DGP Abhyanand said the seven blasts took place between 9:30 am and 11:45 am in which timers were also used.
The DGP said six live bombs were also recovered and defused by the bomb disposal squad.
Two unexploded bombs each were recovered from near Mahatma Gandhi's statue, the twin towers--both close to the rally venue--and at the rail platform toilet.
Five low intensity blasts occurred on the outer periphery of the Gandhi Maidan, Union Home Secretary Anil Goswami told PTI in Delhi. One bomb went off before the Eliphistine cinema hall on the western side of the rally venue, police said.