CCTV released after Sydney Macca's brawl

Police have released images of a man they want to question over a brawl and a stabbing at a McDonald's car park in Sydney's west five months ago.

The CCTV images show a group of men who are believed to be involved in the incident that left a 19-year-old man suffering serious stab wounds in May.

An 18-year-old man and a 17-year-old boy have already been charged over the brawl at Campbelltown's McDonald's but police have not charged anyone in relation to the stabbing.

In a separate incident, two men were reportedly stabbed outside the same fast-food outlet in July, according to News Corp.