Anthony Zervas, 29, was bludgeoned to death with metal bollards in the domestic terminal after a brawl erupted between two warring bike gangs, the Hells Angels and the Comanchero.

Mr Zervas was apparently not a member of the Hells Angels, but had been on a flight from Melbourne with his brother Peter, a member, and Derek Wainohu, the club's Guildford chapter president.

Police this morning said they were pursuing Mr Zervas over the stabbing of an off-duty officer at Brighton-Le-Sands on Friday, but called off the chase after his death.

"We would allege he was a person of interest ... allegedly a co-offender in the incident," a police spokesman said.

It was alleged Mr Zervas and another man were trying to get into a unit block on The Grand Parade about 1pm when the officer intervened and tried to stop them. Police would not say whether the men were trying to break into the apartment.

There was an argument and one of the men allegedly pulled out a knife and stabbed the officer twice in his left arm, police said.

The officer managed to shut the glass door to the unit but the man carrying the knife allegedly kicked the door, smashing the glass.

The two men then ran off.

Police yesterday arrested a 40-year-old man at his apartment on The Grand Parade.

He was charged with concealing a serious offence and will face Central Local Court today.

The police officer was treated at St George Hospital, where he received stitches, and was released.