National Investigation Agency (NIA) officials probing the Udaipur killing of Kanhaiya Lal have suggested that there might be many more groups or individuals who have been given the task by Pakistan based handlers, webindia123.com reports on July 3. "We are trying to learn how many persons have been radicalised by Riaz Akhtari and Ghouse Mohammad, the two prime accused in the Udaipur incident in which tailor Kanhaiya Lal was killed. From their WhatsApp group we are trying to know how many Indian numbers were active on that group," said the sources. "We have to identify those who have been given the task and those who were in touch with all radical groups having links with the ISIS and other terror groups," said the source.