JACKSONVILLE, Fla. (CBS12) — The Jacksonville Sheriff’s Office said an eight-week compliance operation with the U.S. Marshals led to 59 arrests involving registered sexual offenders, sexual predators and career offenders accused of violating release requirements.

JSO’s Offender Tracking Unit conducted Operation Riverwatch from June 15 through Aug. 14, according to a sheriff’s office Facebook post.

Detectives spent more than 230 hours completing 535 checks of registered offenders and predators across Jacksonville, the agency said. The operation resulted in the arrests of 59 people, including men and women ranging in age from 21 to 76.

The sheriff’s department included a list of names of those arrested in a Facebook post.

The sheriff’s office did not specify the alleged violation or charge tied to each arrest in its post.

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Under Florida law, registered offenders must follow reporting and registration requirements. JSO said violations can result in felony charges and additional registration requirements, depending on the circumstances.

Anyone who suspects a registered offender or predator is violating requirements can report it to JSO at 904-630-0500.