Joseph Graves worked at a crime lab that processed evidence in cases . Authorities say he switched prescription drugs with ones that were n't and sold the stolen pills . He was arrested on Tuesday, but has not yet been charged. Florida Attorney General Pam Bondi said her office would assist in the investigation . Officials are concerned this could mean some drug convictions will be overturned .
Joseph Graves worked at a crime lab that processed evidence in cases . Authorities say he switched prescription drugs with ones that were n't and sold the stolen pills . He was arrested on Tuesday, but has not yet been charged. Officials are concerned this could mean some drug convictions will be overturned .