Two men have been charged after patrons and staff were allegedly assaulted at a bar in Lonsdale Street, Braddon, early on Sunday morning.

At about 2.30am a group of interstate outlaw motorcycle gang members were involved in a brawl in Hopscotch Bar that saw two patrons and and two Hopscotch staff assaulted.

Two men fled when police arrived. But a 40-year-old Victorian man from Tarneit was arrested in City Walk.

On Sunday police arrested the second man, a 28-year-old from Mickleham, Victoria, at Canberra Airport.

Taskforce Invidia officers have identified five interstate Finks OMCG members from the Hopscotch Bar CCTV.

Witnesses to the incident or anyone who has information about the activities of OMCGs in the ACT should call 1800 333000, or via the Crime Stoppers ACT website.