Frank Pospisil admitted in U.S. District Court in Dayton, Ohio, on Wednesday that he had stolen his mother's Social Security survivor benefits totaling $230,479 since she died in 1981, according to federal court documents.

Two attorneys listed for Pospisil did not return calls seeking comment on Thursday. A sentencing date has not been set for Pospisil.

(Reporting by Kevin Murphy in Kansas City; Editing by David Bailey and Eric Beech)