GREENEVILLLE, Tenn. -

A federal grand jury has indicted another cancer doctor  in the region on charges that his practice purchased medications from sources not approved by the FDA. 

According to the indictment, Anindya Kumar Sen and his wife Patricia Sen operated East Tennessee Cancer and Blood Center with offices in Greeneville and Johnson City. 

Prosecutors say the office began ordering medications from sources outside of the United States in 2009. 

We're told in some cases, the medication labels were printed in foreign languages. 

Dr. Sen and his wife, who was the office manager, are both facing charges related to the purchase of the drugs and subsequent billing to Medicare and Medicaid after it was given to patients.

News 5 spoke with Dr. Sen's attorney, Ed Yarbrough. He said he could not comment on the case other than telling us Dr. Sen denies all the charges filed against him.

Daniel Warlick is representing Patricia Sen and the clinic. Warlick told us he, too, could not comment specifically, but he did say his clients will enter a plea of 'not guilty.'

We spoke with an employee at East Tennessee Cancer and Blood Center. She told us the clinic is still operating and Dr. Sen is still practicing.