MEDFORD — A serial bank robber has pleaded guilty to the 2008 heist of a Washington Mutual Bank branch in Medford and escaping from a work-release center, officials said.

MEDFORD — A serial bank robber has pleaded guilty to the 2008 heist of a Washington Mutual Bank branch in Medford and escaping from a work-release center, officials said.

During his plea hearing in U.S. District Court on Tuesday Ronald Allan Green, 46, admitted to running away from the Jackson County Work Release Detention Center and later robbing the bank of $8,820 on March 17, 2008.

Green has prior convictions for bank robbery and burglary stretching across several states, thereby qualifying as a career criminal under federal guidelines.

Green was convicted of robbing a Portland bank in 2002 and was serving out that sentence at the federal Bureau of Prisons-approved work-release center in Talent when he escaped.

He is scheduled for sentencing on Aug. 24 before U.S. District Court Judge Owen M. Panner.

It is alleged Green has committed three other bank robberies in California and five bank robberies in Nevada while he was on the lam from the work release center. He ultimately was captured by U.S. Marshals in Florence. Green will most likely plead guilty to those crimes at a later date.