Police say that within the last 24 hours there have been several reported cases of individuals with "severe health problems" after they took what was believed to be heroin.

Police don't know if the health problems are the result of drug overdose or if the heroin contained a foreign substance.

Anyone with  information is asked to call the vice and drug office at 905-546-3883 or Crime Stoppers at 1-800-222-8477.