HEMET, Calif. -- Authorities say an employee at a fast-food drive-thru window in Southern California stabbed a customer after a dispute over his order.

A Riverside County sheriff's statement Friday said the man complained about his order to 28-year-old Gabriel Villalba, who worked at Del Taco in Hemet, shortly before 2 a.m. Thursday.

The statement says the confrontation escalated until Villalba stabbed the customer in the abdomen with a knife.

The customer, whose name was not released, was driven to the hospital by friends. His injury is serious but not considered fatal.

Villalba was arrested on suspicion of assault with a deadly weapon and is being held on $25,000 bail.

Deputies did not know if he had hired an attorney and there were no local phone listings in Villalba's name.