Waterloo Regional Police continue to investigate the weapons incident in downtown Kitchener on Friday afternoon.
Police say police officers were called to Weber Street West and Victoria Street North around 2:30 pm. After two people have been sprayed with toxic substances.
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They Victims, a 48-year-old man and a 38-year-old woman, required on-site treatment by rescuers.
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According to police, the victim and the suspect are known to each other.
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Police are asking anyone with information to call the crime stopper at 519-570-9777 or 1-800-222-8477.
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