Wilmer Castillo Garcia, Mastic man who sold gummies that sent William Floyd Middle School students to the hospital, sentenced to 2 years in prison

The Mastic man who sold gummies to a William Floyd Middle School student last year, which resulted in nearly a dozen teens being sent to the hospital, has been sentenced to 2 years in prison, Suffolk officials announced.

Wilmer Castillo Garcia, 24, who also sold narcotics to an undercover officer, will serve time in state prison before he is remanded to the custody of U.S. Immigration and Customs Enforcement, Suffolk County District Attorney Ray Tierney said in a news release. He is a Guatemalan national.

Castillo Garcia sold a 13-year-old William Floyd student marijuana gummies via Instagram in March 2025, Newsday reported. That student distributed the edible THC to peers, sickening the student and 11 others, nearly all of whom were hospitalized and treated. Castillo Garcia was charged with acting in a manner to injure a child under 17.

On two occasions in May 2025, Castillo Garcia sold cocaine and marijuana to an undercover officer, Newsday reported. He was arrested three months later and pleaded not guilty to two counts of criminal sale of a controlled substance, two counts of unlawful sale of cannabis or concentrated cannabis and criminal possession of a controlled substance.

He was released of his own recognizance because his charges were not bail eligible, Tierney said. The district attorney added of Castillo Garcia: “He then used that opportunity to flee toward the Canadian border,”

Officers with the Canada Border Services Agency arrested the Mastic resident on Oct. 4 at the border in Lewiston, New York, and remanded him to ICE, according to Tierney’s release. The district attorney’s office requested custody so he could face criminal charges.

On July 23, Castillo Garcia pleaded guilty to third-degree criminal sale of a controlled substance and endangering the welfare of a child before Judge Anthony Senft Jr. at First District Court in Central Islip, Newsday previously reported.

Castillo Garcia’s defense attorney, Matthew Tuohy, did not immediately respond to Newsday’s request for comment Tuesday afternoon.