Oxnard police officers responded to a report of a robbery on the 3600 block of Saviers Road at about 8:40 p.m. Monday.
Employees there told officers a man in his 40s wearing a ski mask and dark clothing entered the restaurant with a handgun and demanded money. The suspect took an undisclosed amount of money from the register and fled the scene.
A witness told officers that someone who may have been the suspect had jumped over the fence to the Blackstock School at 701 E. Bard Road.
Officers and a K-9 police dog searched the area, but did not locate the suspect. The suspect remained at large on Tuesday.
No one was injured in the robbery.
Anyone with additional information is encouraged to call the Violent Crimes Hotline at (805) 982-7070, or contact the Ventura County Crime Stoppers at (800) 222-8477. Persons can also visit the website venturacountycrimestoppers.org to leave an anonymous tip.