A fight between two illegal vendors on the Coney Island boardwalk turned violent Tuesday night.
Police say Maria Poaquiza, 36, got into an argument with a 42-year-old woman that escalated when Poaquiza allegedly punched her in the face, struck her with an umbrella and then slashed her arm with a knife.
Exclusive photos obtained by News 12 show officers recovering the knife from the scene and placing Poaquiza under arrest…