SAN DIEGO (CNS) - Former San Diego Mayor Bob Filner pleaded guilty today  to one felony count of false imprisonment by violence, fraud, menace and  deceit and two misdemeanor counts of battery for sexually harassing three women  while in office.

The felony count carries a possible three-year prison sentence, while  misdemeanors come with a maximum penalty of one year in jail. But under the  plea deal with prosecutors, he is expected to receive three years of probation  and three months of home confinement when he is sentenced Dec. 9.

According to the Attorney General's Office, Filner will also be barred  from ever seeking or holding public office. He will also be required to undergo  mental health treatment while he is on probation. If he violates probation, he  faces up to six  months in jail.

He remains free on his own recognizance until his sentencing hearing.

The victims were identified as Jane Does 1, 2, and 3, according to the  state Attorney General's Office, which announced the charges earlier today.

A grand jury had been hearing evidence against Filner, according to  published reports.

Filner, 70, resigned from office Aug. 30 after nearly 20 women came  forward saying he had groped them or sexually harassed them over several years.

Filner's former communications director, Irene McCormack Jackson, filed  a sexual harassment lawsuit against the former mayor.

``This conduct was not only criminal, it was also an extreme abuse of  power,'' Attorney General Kamala Harris said. ``This prosecution is about  consequence and accountability. No one is above the law.''

Filner will also be forced to surrender his mayoral pension accrued from  the time of the felony offense -- March 6 -- through his Aug. 23 resignation.