Indra Mohan Borah, another accused in the Guwahati blast,was arrested on Friday from Puranigudam Birahi village, taking the number ofarrests to four.

The Nagaon Police brought Indra Mohan to its districtheadquarter for interrogation.

The Golaghat Police on Friday morning detained a formerUnited Liberation Front of Assam (ULFA) member in connection with the blastthat rocked Guwahati Wednesday evening. Identified as Amit Ballav Goswami, theman was bomb experts of the ULFA.

Earlier on Thursday, the Police arrested Jahnabi Saikia Dasand 'self-proclaimed' pro-talk ULFA member Pranamoy Rajguru in connection withthe blast near Guwahati Central shopping mall in Zoo Road.