Serial bomb explosions rocked the eastern Indian state of Bihar\'s capital Patna Sunday, killing at least one person and injuring five others, a senior police official said. \"Three bomb explosions took place in a span of two hours, one at Patna\'s main railway station, the second one went off near a movie theater in the city, and the third at a ground where the country\'s main opposition Bharatiya Janata Party (BJP)\'s prime ministerial candidate Narendra Modi has been slated to address a political rally later in the day,\" he said on condition of anonymity. In the first crude bomb explosion at 10.30 a.m. (local time), one was killed and another person seriously injured. Another crude bomb was found and defused by security forces at the same spot, the official said. In the second explosion under a tree near the Elphinstone movie hall, at least four people sustained injuries, while so far no reports of any casualty has been reported in the third explosion. All the injured have been admitted to local hospitals where the condition of one is said to be serious, the official said, adding one more crude bomb has been found at the railway station and defused. The explosions came just hours before the Modi was to hold a political rally for which Indian Railways have been running special trains to facilitate BJP supporters to reach the city.