The death of a National Intelligence Service (NIS) officer linked to a high-profile acid attack case has taken a dramatic turn, raising fresh questions about the circumstances surrounding his final days.
Elvis Opiyo, who had been identified as the prime suspect in the March 2026 acid attack involving Seventh-day Adventist singer Mary Claire Ochieng, was found dead inside his rented apartment at Amani Court in Umoja Two, Nairobi. His death was reported on Tuesday, August 11, 2026.
According to police reports, Opiyo's body was found lying on his back with no visible external injuries. Investigators at the scene discovered an empty white plastic cup containing traces of an unidentified substance, together with a spoon and another white substance wrapped in clear nylon on a nearby table.
A post-mortem examination later established that Opiyo had died after ingesting poison. Police have classified the death as a suspected suicide, although investigations are continuing and authorities are awaiting full toxicology results to establish the exact substance involved. No suicide note was reportedly found at the scene.
The circumstances surrounding his death have attracted particular attention because of developments in the acid attack case. Opiyo had reportedly been summoned by his employer, the NIS, shortly before his death. Family members and a close friend, speaking anonymously, claimed that he had received a dismissal letter from the agency in connection with the allegations surrounding the acid attack.
Reports indicate that Opiyo had travelled to Nairobi from his rural home after receiving the summons. He allegedly contacted his wife and informed her that he had lost his job. The dismissal letter was later reportedly recovered near his body.
His death came as investigators were pursuing the acid attack case, which had generated considerable public interest because of the severity of the injuries suffered by the victims and the allegations involving an individual linked to the intelligence service.
Mary Claire Ochieng was among the victims of the March attack. She suffered serious injuries after being attacked with a corrosive substance. Investigators had previously alleged that Opiyo was involved in orchestrating the attack and had allegedly hired another individual to carry it out. Opiyo had denied the accusations and had been facing the legal process before his death.
The case reportedly stemmed from a relationship dispute involving Ochieng and her former partner. Investigators had been examining allegations of threats and previous attacks before the acid assault, making the case one of the more closely followed incidents involving gender-based violence in Nairobi.
Opiyo's death now creates a significant development in the criminal investigation. While his death ends the possibility of proceedings against him personally, investigators are expected to continue examining the alleged involvement of other suspects.
The Directorate of Criminal Investigations (DCI), particularly officers from the Buruburu area, is handling investigations into his death. Police are also expected to examine evidence recovered from the apartment, including the suspected poisonous substance, communications and events leading up to his death.
Meanwhile, the incident has renewed conversations about the emotional and psychological pressures faced by people involved in serious criminal investigations. However, authorities have cautioned that the circumstances of Opiyo's death should not be conclusively determined until all investigations and forensic examinations are completed.
As his family makes arrangements for his burial, questions remain over what happened during his final hours and whether the developments surrounding the acid attack investigation played a role in his death.
For now, investigators are awaiting the full toxicology findings as they piece together the events that preceded the discovery of Opiyo's body in Umoja.