3rd person charged in killing of Ontario man found in Ottawa River (opens original article in a new tab)

A third individual has been charged with first-degree murder in the killing of an Ontario man whose body was found in the Ottawa River in 2025.

• A third person was charged with first-degree murder in the killing of Robert Prevost, found in Ottawa River in 2025.
• Robert Prevost, 63, was reported missing in March 2025 and his body was found in May 2025.
• Yvon Vieno, 38, was arrested and charged with murder, conspiracy to commit murder, and indignity to a body.
• Two other individuals were previously arrested in connection with the same investigation.