Former Arizona Sheriff Joe Arpaio, who was convicted in February of multiple felonies stemming from a string of sexual assaults, is expected to be sentenced later this month.

He faces up to 25 years in prison.

The former sheriff has been on the FBI’s Most Wanted List since 2009.

He was convicted of violating civil rights and violating the Hatch Act, which bans the FBI from monitoring federal employees.

The FBI is also investigating allegations of civil rights violations in Arpaio’s Phoenix office.

Arpaio was sentenced to five years in federal prison, but the sentencing hearing is set for January.

Arpaio, 66, is currently being held in a maximum security federal prison in Colorado.

Prosecutors said they were still investigating whether Arpaio had any prior criminal convictions.

Arpaio is the third highest-ranking law enforcement official in the country.

He served as the sheriff of Maricopa County, Ariz., from 1993 to 2017.

He has served as U.S. Attorney in Arizona since 2008.

The Associated Press contributed to this report.