 Around this time Jatin attempted to establish contacts with the 10th Jat Regiment, garrisoned at Fort William in Calcutta, and Narendra Nath committed a number of robberies to raise money.Shamsul Alam, a Bengal police officer preparing a conspiracy case against the group, was assassinated by Jatin associate Biren Dutta Gupta.His assassination led to the arrests which precipitated the Howrah-Sibpur Conspiracy case.