Man seriously injured after stabbing at Trader Joe's

BOSTON (WHDH) -- Police said a confrontation in a Back Bay supermarket spilled outside and turned violent, leaving one man fighting for his life.

Michael Guess, an employee at Trader Joe's, said he was forced to stab a customer because the 30-year-old man, who was drunk and belligerent, was threatening him.

The stabbing happened on Thursday night.

Guess’ attorney said he was outside the store telling folks it was closing time and not letting new customers inside.

Guess and the customer started yelling at each other. Guess’ attorney said when Guess felt threatened he was forced to stab the man.

“He admitted to stabbing the victim in this case. He admitted to using a black folding knife. He admitted to possessing two knifes on his person,” said prosecutor Edward Curley.

Police found two knives outside the Trader Joe’s door. One knife was said to have blood on it.

Prosecutors said Guess admitted to stabbing the victim, whom they say is a veteran. The man is now on a ventilator because of his serious injuries.

"I just saw the ambulance lights and I went out there and he was just lying flat on the ground and not really moving," said Matthew Haranas, who works nearby.

Authorities said Guess has a previous record that includes assault and battery with a weapon and shoplifting.

Trader Joe's released a statement saying, "The unfortunate incident is presently under investigation and we are fully cooperating with the authorities."

Guess will remain in jail until his next court appearance.