SANTA ANA (CBSLA.com) — Police are investigating a mysterious death at a market in Santa Ana.

A woman was acting violently Wednesday at El Toro Carniceria-Meat Shop at 1340 West 1st Street when a security guard placed her in handcuffs, according to investigators.

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A witness said she was behaving erratically and began removing her clothes.

“She was jumping like crazy. And then she made a mess inside the liquor store. And that’s why the security guard had to do what he had to do, and grab her and handcuff her,” Joseph Castellan said.

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Moments later, she died.

Detectives have not released the identity of the woman.

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A coroner will try to determine if she was under the influence of alcohol or drugs.