The Oklahoma State Bureau of Investigation is investigating the death of 30-year-old Elgin Public Schools teacher, Holly Hill.

A spokesperson for the OSBI confirms it initiated the investigation at the request of Comanche County District Attorney Kyle Cabelka.

Hill died this week following more than two years of health complications, her family said, stemmed from a visit to Hacienda Las Margaritas Bar & Grill on Valentine’s Day in 2023.

According to Hill’s mother, Kelly Hunter, a second margarita that was served to Hill contained an industrial cleaning solution.

“Her mouth was on fire, and she knew something wasn’t right,” Hunter said. “She immediately jumped up and ran to the bathroom, started throwing up, started rinsing her mouth out with water.”

Over the course of the next several

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