Authorities responded to the scene of a fire in at the fast food restaurant in Harlingen after a grill caught on fire.
Witnesses told Action 4 News that a grill in the kitchen of the restaurant on the 600 block of Sunshine 77 caught on fire around 10:50 a.m.
Employees reportedly attempted to put out the flames with a fire extinguisher, but called the Harlingen Fire Department as the fire continued.
Customers and employees also evacuated the fast food restaurant.
Witnesses said three fire trucks arrived at the scene to battle the flames inside McDonalds.
No injuries were reported from the fire.