Police confiscated guns and other weapons as well as illegal drugs at a fete at Cheapside Road, St Michael last Sunday.
Two people were also held to assist lawmen with investigations.
The event was held at the premises of A&A Wholesale, where over 300 patrons were in attendance.
When police arrived at around 2:45 a.m. , patrons broke down the temporary fencing and ran off in different directions.
Lawmen subsequently searched 73 of the patrons, but nothing illegal was found on them.
A further search of the venue and its immediate environs uncovered a nine-millimetre Smith and Wesson firearm with 14 rounds of ammunition; .45 colt with eight rounds of ammunition; 20 pairs of scissors; a bolt cutter and a small quantity of cannabis.