Waterloo Regional Police say they discovered a homemade drug lab and ketamine in a home in Waterloo early Tuesday morning.
Police say emergency services were called to a home on Erb Street East for a suspected overdose shortly after midnight.
They say a 25-year-old man regained consciousness after being attended to by emergency medical services.
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Police say they came across the lab in the process. It appeared to be set up to make illegal drugs.
They say officers acquired a search warrant before searching the premises, where they found numerous chemicals, including approximately nine grams of suspected ketamine