This is the moment a vicious brawl erupted in a fast food restaurant between an employee and a manager that spilled over to include customers.

The fracas, which took place at a Wendy's on 27th and Capitol in Milwaukee, US, on Monday, saw a number of people throwing punches and kicks inside the diner.

Footage shows a man who appears to be a customer squaring up to a Wendy's employee before throwing a barrage of punches at the smaller man in a red uniform.

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This is the moment a vicious brawl erupted in a fast food restaurant between an employee and a manager that spilled over to include customers

The fight spilled from the dining area into the kitchen area and then outside where up to a dozen youths punched, kicked and scratched one and other.

At one point, three people are seeing ganging up on one, dragging him in different directions and throwing him over a counter.

While two girls were recorded slapping each other and pulling hair amid the chaotic scramble.

Floyd Taylor, a customer at the restaurant, captured the melee on film.

The fracas, which took place at a Wendy's on 27th and Capitol in Milwaukee, US, on Monday, saw a number of people throwing punches and kicks inside the diner

He said he was in line to get cheeseburgers when the fight broke out between the employee and manager before other employees joined the scrap.

'The girls that were taking my order and making my food were fighting each other,' Taylor said.

'It was wild in there. I can't say I was afraid. There were little kids in there. I seen a kid was crying. I feel for them, that's it. I wasn't afraid. I did kind of get caught in the middle of the fight, but I moved out of the corner, whatever,' Taylor told Fox6.

Footage shows a man who appears to be a customer squaring up to a Wendy's employee before throwing a barrage of punches at the smaller man in a red uniform

Eventually police arrived to break up the fight and disperse the crowd.

Milwaukee police are investigating this case to determine what prompted the altercation.

No arrests have yet to be made.