Some senior members of the group were sent abroad. One of the first batches included
Surendra Mohan Bose,
Tarak Nath Das and
Guran Ditt Kumar, who, since 1907, were extremely active among the Hindu and Sikh immigrants on the Western coast of North America. These units were to compose the future
Ghadar Party. In Paris
Hemchandra Kanungo alias
Hem Das, along with
Pandurang M. Bapat, obtained training in explosives from the Russian anarchist Nicholas Safranski. After returning to Kolkata,
Hemchandra Kanungo joined the combined school of 'self-culture' (
anushilan) and opened a bomb factory at a garden house in
Maniktala, a suburb of Calcutta. However, the attempted murder of Kingsford, the-then district Judge of
Muzaffarpur by
Khudiram Bose and
Prafulla Chaki (30 April 1908) initiated a police investigation that led to the arrest of many of the revolutionaries. The prisoners were tried in the famous
Alipore bomb conspiracy case in which several activists were deported for life to the
Cellular Jail in Andaman. In 1908, as a next step, Jugantar chose to censure persons connected with the arrest and trial of revolutionaries involved in the Alipore Bomb Case. On 10 February 1909, Ashutosh Biswas, who conducted the prosecution of Kanai and Satyen for the murder of Naren Gosain (a revolutionary turned approver), was shot dead by Charu Basu in the Calcutta High Court premises. Samsul Alam, Deputy Superintendent of Police, who conducted the Alipore Case was shot and killed by Biren Dutta Gupta on the stairs of Calcutta High Court building on 24 January 1910. Charu Basu and Biren Dutta Gupta were later hanged. Several including
Jatindra Nath Mukherjee were arrested in connection with the murder of Police inspector Samsul Alam on 24 January 1910 in
Calcutta and other charges. Thus started the
Howrah-Sibpur Conspiracy case that tried the prisoners for treason, waging war against the Crown and tampering with the loyalty of Indian soldiers, such as those belonging to the
Jat Regiment posted in
Fort William, and soldiers in Upper Indian Cantonments. ==The German plot==