(CNN) The general manager of a Buffalo Wild Wings in the Boston area died after two cleaning agents combined to create toxic fumes in the restaurant's kitchen, officials said.

Ryan Baldera.

The incident at the restaurant in Burlington began around 5:30 p.m. Thursday, with workers and customers, some coughing, streaming out of the facility as fumes spread, witnesses told CNN affiliate WCVB

Ryan Baldera, 32, was taken to a hospital, where he died. Thirteen other people -- 11 employees and two patrons -- were also hospitalized with burning eyes and difficulty breathing, the Burlington Fire Department said.

A restaurant employee put a chlorine bleach-based product, Super 8, and acid-based cleaner Scale Kleen on the kitchen floor while cleaning it, the fire department said in a news release, citing a preliminary investigation it conducted with the Occupational Safety and Health Administration.

The bleach and acid reacted with each other, creating toxic fumes, the fire department said.

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