SHERMAN, Tex. (KXII) -- A Grayson County woman was added to a federal indictment accusing a local pain management doctor of writing prescriptions for no medical purpose.. killing at least seven people.
The documents filed in January allege Dr. Howard Gregg Diamond, now with Jordan Brooke Johnson, wrote prescriptions for no medical purpose.
Diamond is accused of the overdose deaths of at least seven of his patients and medicare fraud.
Both pleaded not guilty to their federal charges.
Diamond is awaiting trial in federal custody.
Johnson has not yet been arrested.