Teen cautioned after allegedly trying to enter Melbourne stadium with fake gun

A teenager has allegedly been caught trying to enter an AFL game at a Melbourne stadium with a small knife and an imitation firearm on Saturday.

Police say a 15-year-old male approached a gate at Docklands Stadium and asked about entering the venue at about 4:30pm, where a match between Essendon and the Sydney Swans had just started.

The male did not have a ticket and was searched by officers nearby.

Police found and seized the weapons, and the male was given a caution.

He did not enter the venue.

The incident follows a security scare at the MCG during an AFL game last month, where two men were charged after allegedly carrying two guns into the venue.

The AFL, which owns the stadium, says it's aware of the incident.