Engineer goes missing in Nidhi Tiwari death investigation as key witness

Authorities investigating the death of Nidhi Tiwari have turned their attention to a missing engineer whose phone contact with the victim's mother immediately preceded the incident. Sonu Singh, identified as an engineer working for an outsourcing company associated with NCL, reportedly called Tiwari's mother to provide information before his mobile phone went offline. The timing and content of that final communication have now become a focal point in the inquiry. Singh's subsequent unavailability has prompted investigators to escalate efforts to locate and question him. Officials have not disclosed details of the conversation or circumstances surrounding Singh's disappearance, but sources close to the investigation indicate that tracing his movements and reconstructing his interactions with the deceased have become priority tasks. The case has drawn significant public attention as police work to establish connections between the key figures involved and determine the sequence of events leading to Tiwari's death.