(WSVN/CNN) - A Subway employee in Miami faces charges after video shows her walking around the restaurant with a knife yelling at customers.

City of Miami police responded around 7 p.m. Monday to a Subway located at Northwest First and East Flagler streets.

Victim Vincente Timiraos, who recorded the video, said he and his friends were just looking to buy a few hot sandwiches. Instead, they were involved in a heated exchange with a Subway worker, later identified as 29-year-old Chelsea Lloyd.

“The Subway employee came out with a knife the size of God knows what,” said Timiraos. “She started coming out, swinging the knife everywhere. She came outside with the knife.”

In the video, a man in the restaurant can be heard saying, “Subway is going to hear about this.”

Lloyd is then heard replying in the video, saying, “[Expletive] Subway. I got a whole 'nother job getting paid $15 an hour.”

According to Timiraos, the altercation started after an issue with his sandwich.

“Because she didn’t want to toast my sandwich separately,” said Timiraos. “She wanted to toast them all together.”

But Timirao’s lawyer, Robert Dominguez, said he didn’t know what triggered the exchange.

“I don’t know how it happened,” said Dominguez.

Things could have escalated further, as Timiraos said he was carrying his gun at the time. He decided instead to keep his distance and film.

“It was over toasted bread,” said Timiraos. “I didn’t feel the need to kill someone over toasted bread.”

Lloyd was arrested and charged for aggravated assault with a deadly weapon. She has been fired from her job.

Courtesy of WSVN via CNN Newsource