Missouri investigates unauthorized physician signatures for marijuana

The Missouri Department of Health and Senior Services is investigating some 600 cases in which people received medical marijuana licenses with unauthorized physician signatures.

Department officials described the incidents as "fraudulent activity," though the patients are not accused of having knowledge that the physicians listed on their licenses were not the physicians who met with them.

Patients with the invalid physician signatures will have 30 days to submit a valid certification to the department.

Read more from the St. Louis Business Journal.