A suspected robber has been critically injured after he was shot by a homeowner in northern KwaZulu-Natal.

ER24 spokesperson Annine Siddall said in a statement on Saturday that the man, believed to be 18 years old, is in a critical condition after it was believed he had been shot by a homeowner in Acaciavale in Ladysmith on Friday night.

She said: "At approximately 9pm, ER24 and other emergency services arrived at the scene, (where) they found the man with a gunshot wound to his jaw."

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Siddall said he had been treated by the paramedics and transported to the Ladysmith Provincial Hospital by other emergency services.