The British authority, while interrogating them, came to know about their involvement inof J. P. Saunders. Bhagat Singh, Rajguru, and Sukhdev were charged with the murder. Singh admitted to the murder and made statements against the British rule during the trial.
While in jail, Bhagat Singh found that the authorities were following a dual policy in treating thethe prisoners. The criminals of foreign origin were treated better than Indian political prisoners. As a protest, he along with some fellow prisoners declared to "go on hunger strike". The strike continued for over a month and finally the British had to accept before their conditions.
Bhagat Singh along with other revolutionaries found responsible for the Assembly bombing and murder of Saunders. On March 23, 1931, Bhagat Singh was hanged in Lahore with his fellow comrades Rajguru and Sukhdev. Singh was cremated at Hussainiwala on banks of Sutlej river.