Marathon, FL Arrested: 66-Year-Old Boat Owner Accused of Attacking Guest with Bladed Object in Marathon

MARATHON, FL – April 25, 2026 – A peaceful evening aboard a boat in the Florida Keys turned into a terrifying ordeal on Friday night, leading to the arrest of 66-year-old boat owner Luis Ancieto Herrada. The Monroe County Sheriff’s Office confirmed Herrada’s arrest following an incident that occurred around 10:42 p.m. on April 24, 2026, aboard his vessel in Marathon.

According to authorities, the situation began as a quiet evening, but tensions quickly escalated when an argument broke out between Herrada and an adult male guest who had been staying on the boat. The exact cause of the disagreement remains unclear, but it rapidly turned violent when Herrada allegedly armed himself with a machete-style knife and began threatening the guest.

The guest, fearing for his life, reportedly fled the scene. Emergency responders were contacted, and authorities arrived shortly afterward to find Herrada in a highly agitated state. He was arrested without further incident and charged with assault and other related offenses. The guest, thankfully, was unharmed and was able to safely leave the situation.

The Monroe County Sheriff’s Office is continuing to investigate the incident, and Herrada remains in custody as legal proceedings move forward. The frightening confrontation has left the local community in shock, as incidents of this nature are rare in the tranquil setting of the Florida Keys.