Former State Senator Vincent Leibell is  due in Federal Court in White Plains Monday where he's expected to plead guilty to corruption charges.

Last week, Leibell announced he will not take the oath of office as the new Putnam County Executive come January.  He did not give a reason. Leibell also suddenly resigned from his State Senate Seat.

Leibell was spotted in White Plains on Friday where sources say he was working out details of a planned plea bargain agreement in which he will serve two years in prison in exchange for his guilty plea on money laundering, bribery and tax evasion charges.

Leibell is due in Federal Court in White Plains  at 9:30 for what officials say is a proceeding relating to a public corruption matter. A news conference is slated for 12 noon.

Federal investigators were in Putnam County on at least two occasions this year. One was  to serve a subpoena  on the Town of Carmel seeking records related to legal services provided by the law firm Servino, Santangelo and Randazzo which had offices in Carmel, White Plains and Hawthorne. It later reformed with attorney Anthony Mangone as a partner.

Prosecutors say an attorney named in the bribery and corruption case of former Yonkers City Councilwoman Sandy Annabi today pleaded guilty to the charges in White Plains Federal Court.

Anthony Mangone pleaded guilty to conspiracy,bribery,extortion and tax evasion charges.

In January 2010, Mangone had been named in an indictment along with Annabi as well as the former head of the Yonkers Republican Party, Zehy Jereis.