Three people were hospitalized after eating candy at the Cambridge Fall Fair on Sunday, according to Waterloo Regional Police.
They say the candy may have been contaminated.
Police say the black and red candy was sold in clear cellophane wrappers at a stand in the country market area of the arena, immediately inside the doors to the fairgrounds.
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Police say the vendor turned over all of the candy that was being sold at the fair and is not believed to have been selling the tainted items purposefully.
They say that one bag of candy remains unaccounted for.
The victims, (a toddler, a young child and an adult) were treated and have since been released, according to police.
A police spokesperson told Global News that none of the victims were related.
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Officers say they are still investigating and are asking anyone with information to call 519-570-9777 or Crime Stoppers at 1-800-222-8477.