"He seemed to be doing a lot better," Woodward said.
But agents lost touch with Sutton last month.
"About the same time, we started receiving information from sources that Sutton was receiving packages from out of state with painkillers," Woodward said.
The shipment OBN agents intercepted yesterday contained about 40 pills. Woodward said shipping company officials indicated Sutton has been picking up similar shipments weekly for the past year.
The pills included Adderall, clonazepam, a generic painkiller and a fourth unidentified pill. Agents interviewed Sutton for about six hours before arresting him and taking him to jail, Woodward said.
Authorities from Washington and New York are now assisting with the investigation and Woodward said more arrests are possible.
Sutton is the son of legendary Oklahoma State basketball coach Eddie Sutton, who the younger Sutton replaced in 2006 when his father retired after lapsing back into an alcohol addiction problem that plagued his coaching career.
Sean Sutton was fired in 2008 following two unsuccessful seasons as OSU's basketball coach.
He hasn't returned to coaching.
OSU issued the following statement: "We are saddened by this news and our thoughts are with Sean and his family."Know It: Addiction