The man from Hunterview, in Singleton, presented to Cessnock Hospital at 10.15am Saturday with a 10 centremetre laceration to his torso.

Hospital staff stitched up the wound and contacted police.

Officers interviewed the 36-year-old who failed to give any information about how he sustained the injury.

Police are investigating the matter and urge anyone with details to call Crime Stoppers on 1800 333 000.