Michigan's attorney general is seeking a criminal investigation into the deaths of 17 residents from contaminated steroids supplied by a Massachusetts pharmaceutical company.
Vials of an injectable steroid manufactured by the New England Compounding Center linked with a nationwide outbreak of rare fungal meningitis.
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Three residents died after being treated in Indiana, so Michigan's death toll also has been reported at 17.
A grand jury can compel testimony under oath, while state investigators don't have that power.
Schuette says there is probable cause to believe crimes were committed in Genesee, Grand Traverse, Livingston and Macomb counties — which have private clinics that administered the steroids.