McDonald's investigating food fight between workers and customer in Sydney

McDonald's is looking into the behaviour of its employees after they were allegedly assaulted by a customer, which resulted in a food fight at a Sydney CBD store.

Video of the incident, which has circulated widely on social media, shows a worker throwing a drink at an agitated customer who retaliates by throwing food back at the workers in Wynyard at 1am on Thursday.

NSW Police said they were called to the McDonald's after reports of a "malicious damage incident".

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"Officers attached to Sydney City Police Area Command were told an employee of the restaurant, a 23-year-old man, had been assaulted," NSW Police said in a statement.

Police arrested a 17-year-old and 15-year-old on George Street a short time later.

"Both teenagers were taken to Day Street Police Station where they were dealt with (under) the Young Offenders Act," police said.

McDonald's Australia said the health and safety of its people and customers was its top priority.

"What is not shown in the video is the customer earlier entering the restaurant and going behind the counter to disrupt the kitchen and threaten crew," McDonald's Australia said in a statement.

"The behaviour of our employees in this video is not in accordance with our policies and we are looking into this with the restaurant.

"Anti-social behaviour is not tolerated in our restaurants and we expect our people to be treated with respect at all times.

"We will always do our best for our customers, but we won't accept abuse, intimidation, threats or violence towards our employees."

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