A video of celebrating birthday of a double-murder convict in Bihar jail has gone viral. Pintu Tiwari was seen cutting a cake with his fellow inmates singing 'Happy Birthday' and receiving gifts, having a feast along with other prisoners. 7 Sitamarhi jail guards were suspended due to the incident. State DGP has ordered an investigation and a 5-member team will probe the matter. A case has been registered against 18 inmates.