Cincinatti ? A doctor whose murder conviction was overturned on appeal a decade ago is now being investigated for prescribing large quantities of OxyContin and other painkillers, a newspaper reported Sunday.

The Ohio State Board of Pharmacy began investigating Dr. L. Stan Naramore in May 2006, when it first received complaints from suspicious pharmacists, The Cincinnati Enquirer reported. Some of his patients told investigators they sold the pills for a profit, the records said.

Naramore, 62, was found guilty in 1996 of second-degree murder and attempted first-degree murder in Kansas. The attorney general’s office there had accused him of killing a man with a drug that made it impossible for him to breathe and trying to kill a woman in the final stages of terminal cancer with a drug overdose. She was removed from Naramore’s care and died a few days later.

The Kansas Court of Appeals overturned his convictions in 1998, citing a lack of evidence.