DETROIT (AP) — Authorities in Michigan and Massachusetts say they will coordinate their investigations of a company that sold steroid injection materials linked to a fungal meningitis outbreak that sickened hundreds of people in 20 states.

Michigan Attorney General Bill Schuette (SHOO’-tee) and Boston U.S. Attorney Carmen Ortiz announced they would coordinate their state and federal probes at a news conference Monday in Detroit.

A federal grand jury in Boston has been investigating the New England Compounding Center for more than a year. A Michigan court also approved a request for a grand jury. Schuette says the coordination will “maximize the resources dedicated to this investigation.”

The Massachusetts company’s steroid materials have been linked to 751 meningitis and other infections, including 264 in Michigan. Tennessee and Indiana were also hit hard.