Several people have been treated in hospital following another frightening brawl which has broken out in a Perth Hungry Jack's outlet and caught on video.

A group of youths are being sought by police after they created early morning havoc and fear in the city outlet on May 2.

Youths can be seen throwing chairs and trays during the city centre brawl Credit:YouTube

Customers and staff at Perth's William Street restaurant can be heard on the video screaming and yelling at the group of up to about 10 youths, some only partly clothed.