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Video allegedly shows boater after collision that killed 15-year-old in South Florida

Florida Fish & Wildlife Conservation Commission investigates teenage girl’s death after boat collision

Authorities located a boat matching the description of one involved in a hit-and-run crash over the weekend. (WPLG)

MIAMI – Surveillance video allegedly shows Carlos Guillermo Alonso with his 42-foot Boston Whaler in Coral Gables after he unintentionally struck and killed Ella Riley Adler on May 11 off Key Biscayne, according to News 6 partner Local 10 News.

According to Florida Fish & Wildlife Conservation Commission Officer George Reynaud, Ella was in the water after falling off a wakeboard waiting to get back on a 42-foot Hanse Fjord.

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Alonso’s attorneys claim the 78-year-old experienced boater was passing by and did not realize he had struck and killed the 15-year-old Ransom Everglades student.

Ella’s funeral was on Monday at Temple Beth Sholom in Miami Beach. FWC investigators found Alonso’s boat and seized it on Tuesday, as the investigation continued.

The FWC released a report on Wednesday identifying Alonso, who was cooperating with the ongoing investigation. It’s unclear if Alonso will be facing any charges.

Ella, a Miami City Ballet ballerina, is survived by her parents, Amanda and Matthew Adler, and her paternal grandfather Michael Adler, the U.S. Ambassador to Belgium.

Related statement:

This was an unthinkable tragedy and our hearts break for Ella and her family. We hope this video helps to shut down some of the awful and unfounded rumors going around about Bill, who is absolutely devastated. As the video shows, Bill was alone. He was not drinking. And he had no clue that he may have hit someone – he parked the boat at his home, he was calm, he didn’t clean the boat, and he did not try to hide anything. Bill will continue to cooperate with law enforcement in every possible way.

Attorney Lauren Krasnoff

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About the Authors
Samiar Nefzi headshot

Samiar Nefzi joined the Local 10 News team in August of 2023.

Andrea Torres headshot

The Emmy Award-winning journalist joined the Local 10 News team in 2013. She wrote for the Miami Herald for more than 9 years and won a Green Eyeshade Award.

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