Shocking footage of brawl breaking out between two women at a McDonald's was captured in Illinois over the weekend.
The fight, which took place at a McDonald's branch in the city of DeKalb, was posted online on Saturday.
It remains unclear what kicked off the scuffle, but footage shows two women scrapping behind the counter of the fast food restaurant.
The brawl was posted to Facebook and Instagram by Marie Dayag, who said the fight started when the customer tried to put soda in a free water cup.
Dayag wrote: 'The lady asked for a water cup and supervisor shut down the soda machine because she wasn't letting her get a free soda.'