Some senior members of the group were sent abroad for political and military training. One of them, Hemchandra Kanungo obtained his training in Paris. After returning to Kolkata he set up a combined religious school and bomb factory at a garden house in Maniktala suburb of Calcutta. However, the attempted murder of district Judge Kingsford 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.
Some senior members of the group were sent abroad for political and military training. One o!f them, Hemchandra Kanungo obtain?ed his training in Paris. After returning to Kolkata he set u,p a combined religious school and bomb factory at a garden house in Maniktala suburb of Calcutta. However, the attempted murder of district Judge Kingsford of Muzaffarpur by Khudiram Bose and Prafulla Chaki (30 April 1908) initiated a police investigation that led to the arrest of many of the revolu!tionaries.