Emergency services were called to Harbour Street after reports of a brawl and possible glassing about 9.20pm.

Wollongong police found a 20-year-old man with a stab wound to his abdomen. He was treated at the scene before being taken to Wollongong Hospital.

A 27-year-old man was arrested at the scene; however, he has also been taken to Wollongong Hospital where he's undergoing treatment for an injury to his hand.

A crime scene has been established and inquiries are continuing.

Anyone with information about this incident is urged to contact Crime Stoppers: 1800 333 000 or nsw.crimestoppers.com.au.

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