Officers were called to the restaurant on La Palma Avenue and Dale Street shortly before 10 p.m., said Buena Park police Sgt. Mike Lovchik.
A man whose face was partially covered by a black-hooded sweater entered the establishment and brandished a gun while demanding money.
Employees gave him cash, and he fled on foot. Lovchik said officers are looking at surveillance footage from the scene. No injuries were reported.
Last week a Domino's Pizza restaurant at Beach Boulevard near Stanton Avenue in the city was also robbed. Though Lovchik said both crimes were similar, detectives have not yet established a link between them.
Anyone with information is asked to call the Buena Park Police Department at 714-562-3901
Source: OC Register