A man suspected to have suffered from drug overdose passed away while being admitted at District Hospital Bishnupur at around 2 am on Wednesday. The deceased person has been identified as one Takhellambam Arun ,24, son of (L) Khaibi of Phoijing Tera Makhong. A case has been registered at Bishnupur Police Station regarding the incident. After a post-mortem was conducted at RIMS, the body was handed over to the family members.