Members of prominent anti-insurgency organisation Assam Public Works(APW) laid out strings of crackers on the main road at Guwahati Club area and ignited them.
Kasab's hanging would send a strong message to all terrorist outfits that they will meet with the same fate, APW said.
Its members took out a banner with a picture of Kasab with noose around his neck and 'Celebration on Kasab's death. India Jindabad' written on it, besides an effigy of Kasab with a white shroud covering it.
Kasab was hanged to death at 7.30 a m at Yerawada jail in Pune after President Pranab Mukherjee rejected his mercy plea earlier this month