NEW YORK (CBSNewYork) — Charges are pending against a World Trade Center security guard after police said he stabbed a man in Lower Manhattan.

It happened around 4 a.m. Monday at a McDonald’s on Broadway and Fulton Street.

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The 55-year-old guard was on duty and in uniform at the restaurant on his meal break when a 20-year-old man suddenly put a French fry on the guard’s head, 1010 WINS’ Carol D’Auria reported.

The guard was heard saying, “What’s your problem?” That’s when police said the man began throwing his fries at the guard.

They then took the argument outside where police said the guard pulled a knife, stabbed the 20-year-old victim in the chest and slashed him in the face.

The man called 911 and the security guard was later arrested at Vesey and Church streets.

The company that employs the guard issued a statement on the matter:

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AlliedBarton Security Services is aware of the incident that occurred this morning involving one of our security officers.  We are conducting an investigation into what occurred and will cooperate fully with the local law enforcement.

There was a mixed reaction from fellow restaurant goers at the McDonald’s Monday morning.

“It’s crazy,” one man said. “You gotta be careful with people because you don’t know how people are going to react, are they armed or not? Sometimes, you can get killed.”

“The person throwing the French fries at the security guard, the young kid, was wrong. It’s not right to say it, but you got what you deserved because you started this,” said one woman, adding maybe the security guard overreacted.

“The man attacks you, you’ve got to try to defend yourself,” another man said. “He shouldn’t have been throwing the French fries.”

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The victim was taken to the hospital, but police said his injuries are not serious.