FDLE Operation Black Horizon: 13 Arrested in Hernando County Offender-Compliance Sweep

The Florida Department of Law Enforcement announced the arrests of 13 individuals in Hernando County following a two-day, multi-agency operation aimed at verifying compliance with the state's offender-registration and supervision laws. The agency announced the operation, called Operation Black Horizon, on June 17, 2026.

FDLE conducted the sweep alongside the Hernando County Sheriff's Office and the Florida Department of Corrections. According to authorities, the effort targeted registrants on active Department of Corrections supervision who were living in Hernando County, located in the Tampa Bay region along Florida's Nature Coast.

All of those arrested are charged, not convicted, and are entitled to the presumption of innocence. The cases are being prosecuted by the State Attorney's Office for the Fifth Judicial Circuit, authorities said.

What the Operation Targeted

According to FDLE, the two-day operation focused on 52 registrants who were on active Florida Department of Corrections supervision and living in Hernando County. The goal, authorities said, was to verify compliance with probation conditions and with Florida's sex-offender registration laws.

Officers and agents made contact with 47 registered offenders and predators during the operation. FDLE and the Hernando County Sheriff's Office conducted verification interviews, while Department of Corrections officials carried out residential and electronic-device searches as part of the supervision checks.

The structure of the operation reflects the layered nature of offender supervision in Florida, which can involve registration requirements enforced by law enforcement as well as probation conditions monitored by corrections officials. Verifying compliance often requires confirming where a person lives, what devices they use, and whether they are meeting the terms set by the courts.

By targeting a defined group of registrants in a single county over a concentrated period, the agencies were able to coordinate interviews and searches across multiple addresses. The approach is a common model for compliance operations conducted by FDLE and its local partners.

Of the 52 registrants targeted, contact was made with 47, leaving a small number not reached during the two-day window. Compliance operations frequently aim to reach as many individuals on the list as possible, and the proportion contacted in this case reflects the concentrated effort the participating agencies devoted to the sweep.

The Arrests

Of the 13 people arrested, 11 suspects were apprehended for registration-related and probation violations, according to authorities. That group included eight individuals described as sexual offenders and three described as sexual predators under Florida's registry classifications.

Florida law distinguishes between sexual offenders and sexual predators, with the predator designation generally reflecting more serious or repeat conduct and carrying heightened registration and notification requirements. Both classifications impose ongoing obligations that authorities monitor through operations like this one.

The obligations tied to these designations can include keeping current address information on file, reporting changes within set timeframes, and adhering to any additional conditions imposed by a court. Operations that verify compliance examine whether those obligations are being met, and an alleged failure to comply can result in new charges separate from the original case that led to a person's registration.

Separately, authorities said Nicola Karbassi, 57, of Spring Hill, was arrested for fleeing and eluding law enforcement after a traffic stop during the operation. That charge is distinct from the registration and probation violations that accounted for the other arrests.

All of the suspects were booked into the Hernando County Jail. As with any arrest, the charges represent allegations that have not been proven in court, and each person is presumed innocent unless and until convicted.

Registration-related and probation violations can take a variety of forms under Florida law, ranging from failing to report a change of address to violating specific conditions imposed by a court. The information provided does not detail the individual allegations against each suspect, and the specifics of each case will be addressed as the matters proceed through the legal system.

How the Agencies Worked Together

Operation Black Horizon brought together three layers of Florida's public-safety apparatus: a statewide investigative agency in FDLE, a local sheriff's office in Hernando County, and the state corrections system through the Department of Corrections.

Each agency contributed a distinct role. FDLE and the Hernando County Sheriff's Office handled verification interviews with registrants, drawing on their authority to confirm registration compliance. Department of Corrections officials, who supervise individuals on probation, conducted the residential and electronic-device searches permitted under supervision terms.

This division of responsibilities allowed the operation to address both sides of an offender's legal obligations at once. Registration laws and probation conditions are enforced through different mechanisms, and coordinating them in a single operation can surface violations that might otherwise go undetected.

Multi-agency cooperation of this kind is a recurring feature of compliance enforcement in Florida. By pooling resources and legal authorities, the participating agencies were able to make contact with a large share of the targeted registrants over the two-day window.

FDLE serves as the state's primary investigative agency and frequently partners with local sheriff's offices on operations that benefit from statewide coordination. The Department of Corrections, which oversees probation and other forms of community supervision, brings authority that local registration checks alone do not provide, allowing the operation to address both registration and supervision obligations together.

Florida's Offender-Registration Laws

Florida maintains one of the more extensive offender-registration systems in the country, requiring registered offenders and predators to keep authorities informed of where they live and other details, and to update that information when circumstances change. Failing to comply can result in new criminal charges.

The system is designed so that the information on file remains accurate over time, which is part of why periodic verification matters to the agencies that administer it. When registrants move, change circumstances, or fall out of compliance with reporting requirements, the registry can become outdated unless those changes are confirmed through checks like the ones conducted in this operation.

Probation conditions add another set of requirements for those under active supervision. Depending on the case, conditions can govern residence, contact with others, use of electronic devices, and more. Violations of these terms can lead to arrest and further court proceedings.

Operations like Operation Black Horizon are designed to confirm that registrants are meeting these obligations. Verification interviews and authorized searches give agencies a way to check whether the information on file is accurate and whether supervision terms are being followed.

The state's framework reflects a policy choice to monitor certain offenders closely after release or during supervision. Enforcement operations are the mechanism by which authorities test compliance with that framework on the ground.

Verification interviews and authorized searches, such as the residential and electronic-device searches conducted in this operation, are tools that supervising agencies use to confirm that the terms of registration and probation are being met. The use of these tools is governed by the conditions attached to each individual's status, and their results can form the basis for new charges when violations are alleged.

The Tampa Bay and Nature Coast Region

Hernando County sits along Florida's Nature Coast, within the broader Tampa Bay region. Communities such as Spring Hill, home of one of those arrested, are part of a growing area north of the Tampa metropolitan core.

Compliance operations in counties like Hernando illustrate how statewide enforcement priorities play out at the local level. The Hernando County Sheriff's Office, as the primary local agency, brings knowledge of the community and its residents to a coordinated effort with state partners.

The Nature Coast's mix of suburban and rural areas presents its own logistical considerations for an operation that involves visiting multiple residences over a short period. Coordinating travel and personnel across the county is part of the planning that such sweeps require.

Hernando County's communities have grown over the years as part of the wider expansion north of Tampa, and that growth brings with it the routine work of local and state agencies in administering the laws that apply across the region. Operations like this one are one facet of that broader public-safety presence in the area.

For residents, operations of this kind are part of the routine, if periodic, enforcement of laws that apply to a specific population of registrants and supervised individuals. The agencies have described the effort in terms of verification and compliance rather than as a response to any single incident.

The Fifth Judicial Circuit, which handles prosecutions in Hernando County, also covers several neighboring counties, reflecting the regional structure of Florida's court system. Cases arising from the operation will be processed through that circuit's framework, joining the broader caseload that prosecutors and courts in the region manage.

What's Next

With all suspects booked into the Hernando County Jail, the cases now move to the State Attorney's Office for the Fifth Judicial Circuit, which is responsible for prosecuting the alleged violations. Prosecutors will evaluate the charges and carry the case forward in court.

Each defendant will have the opportunity to respond to the allegations through the judicial process. The charges, including the registration and probation violations and the separate fleeing-and-eluding charge, remain accusations that must be proven beyond a reasonable doubt.

FDLE and its partners have not, in the information provided, indicated whether additional arrests or follow-up actions may stem from the operation. The agencies made contact with most of the targeted registrants, and the announced arrests represent the outcome reported as of June 17, 2026.

The separate charge against Nicola Karbassi of Spring Hill, for fleeing and eluding law enforcement after a traffic stop, will proceed alongside the registration and probation cases through the same circuit. Like the other defendants, Karbassi is presumed innocent, and that charge will be tested through the ordinary steps of the criminal process.

For now, the operation stands as an example of how Florida's state and local agencies coordinate to enforce registration and supervision laws. The legal questions raised by the individual arrests will be resolved through the courts in the Fifth Judicial Circuit.

Each defendant will move through the standard stages of a criminal case, which can include initial appearances, the formal filing of charges, pretrial proceedings, and ultimately a resolution by plea or trial. Throughout, the presumption of innocence remains in place, and the burden rests with the state to prove the alleged violations beyond a reasonable doubt. The path that each case takes will depend on its specific facts and on the decisions made by prosecutors and the defense as the matter advances.