Surinder Koli, widely known for his involvement in the 2006 Nithari serial killings, was discovered dead in Haridwar under circumstances that authorities have described as suspicious. Koli had been a central figure in a case that shocked the nation, involving the discovery of human remains in a drain near a residence in Nithari, Noida.

The legal history of the case was complex and protracted. Following the initial discovery of the remains, Koli provided confessions to authorities that detailed a series of gruesome murders. However, the judicial process saw significant shifts over the following years, with various courts issuing differing rulings. While Koli was initially convicted in several of the cases, subsequent legal challenges led to acquittals in a number of them, highlighting the difficulties in securing finality in the investigation.

The circumstances surrounding his death in Haridwar remain under investigation. Authorities have not yet released a definitive cause of death, though the nature of the discovery has prompted immediate scrutiny given Koli's notoriety and his history within the Indian justice system. The Nithari case remains one of the most controversial criminal investigations in recent history, marked by allegations of police negligence and intense media scrutiny regarding the handling of evidence.