It happened just after 8 p.m. in the 1000 block of East Geer Street.
Two armed men robbed employees at Taqueria La Fiesta food truck.
The two men were wearing hoodies and had their faces covered, police said.
Anyone with information is asked to call CrimeStoppers at (919) 683-1200. CrimeStoppers pays cash rewards for information leading to arrests in felony cases and callers never have to identify themselves.