Delaware state police say the stabbing happened early Sunday morning outside the Mariachi House on Lancaster Pike in Hockessin.
Authorities say a 20-year-old man who was involved in a dispute inside the restaurant was confronted by 24-year-old Giovany A. Reyes, of Bridgeton, after he walked outside.
Police say Reyes took out a knife and stabbed the man multiple times in the abdomen.
Reyes, who was being held on cash bond, faces charges including assault. It wasn't immediately clear if he had a lawyer.
Police say the stabbing victim is from Vineland, N.J. He underwent surgery for non-life-threatening wounds. The relationship between the two men wasn't immediately clear.