OPP appeal to public for information in 23-year-old unsolved homicide case

A $50,000 reward is offered by the province for information leading to the conviction of those responsible for the murder of Sonya Nadine Cywink. Ontario Provincial Police

Twenty-three years after her death, Elgin OPP say they continue to search for new leads and information in their ongoing investigation into the homicide of Sonya Nadine Cywink.

Cywink, 31, originally from White Fish First Nation on Manitoulin Island, had been living in east London at the time of her death and was last seen alive near the intersection of Dundas Street and Lyle Street around 2 a.m. on Aug. 26, 1994.

Her body was found four days later at the Southwold Earthworks, a historic site, and former First Nation settlement, on Iona Road in Elgin County, and had evidence of blunt force trauma, police said.

On Wednesday, Elgin OPP appealed to the public for any information in the 23-year-old homicide case, saying a $50,000 reward remained offered by the province for information leading to the conviction of those responsible.

Anyone with information about the case is asked to contact OPP at 1-888-310-1122 or Crime Stoppers at 1-800-222-TIPS (8477). Information can also be sent online through

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Cywink’s case is one of at least seven unsolved Indigenous female homicides being investigated by the OPP, according to a police document from May 2017.

The case remains under investigation under the direction of Det. Insp. Andy Raffay of the OPP Criminal Investigation Branch.

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