Answer:
On April 8, 1929, Bhagat Singh and Batukeshwar Dutt, another revolutionary, threw a bomb in the central legislative assembly. The bomb was a harmless one and was exploded in protest against the decision of giving more power to the police which was governed by the britishers. Shortly after his arrest and trial for the Assembly bombing, the British came to know of his involvement in the murder of J. P. Saunders. J. P. Saunders was the police officer who was responsible for the killing of veteran freedom fighter Lala Lajpat Rai.
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