Rishiraj Singh Speaks on Depression and Addiction in Children Posted on July 15, 2020July 15, 2020 by Husain Rishiraj Singh IPS, DGP, Prisons and former Excise Commissioner, speaks to Oxfordians and their parents on depression and addiction in children. The online talk will be held on July 18 from 11 am to 12 noon, via Google Meet.