TWU Local 100 said the carriage horse's cause of death was determined following a necropsy at Cornell University Collage of Veterinary Medicine.

This story contains details that may be disturbing to some viewers. NEW YORK (PIX11) – The cause of death for a carriage horse that passed out and died on a Hell’s Kitchen sidewalk has been released,

On Tuesday, a carriage horse in Manhattan collapsed and died on the way to its stable, according to a local union. Authorities learned of the incident around 2:30 p.m. after receiving a 911 call requesting assistance at the corner of West 51st Street and 11th Avenue in midtown.