NEW: Customers vs. employees brawl breaks out at a West Hartford, Connecticut Chipotle, prompting an investigation. A customer in a green sweatshirt was seen chucking a metal object at a worker before tackling the worker to the ground. Another customer in a brown shirt was also seen joining in on the action. "At Chipotle, the health and safety of our employees and our guests is our highest priority," said Chipotle's chief corporate affairs officer, Laurie Schalow. "We have zero tolerance for guests who mistreat our employees and fail to give them the respect they deserve." It's unclear what started the fight. No arrests have been made.