Since the start of Warzone Season 3, players have managed to find a number of areas around Verdansk that enable them to merge underneath the map.
The early stages of the season saw players managing to get underneath the stadium which granted them immunity against the encroaching cloud of toxic gas used to shrink the map as the match progresses.
Despite Raven Software managing to patch some of the areas that players had been exploiting, the Prison is the latest point of interest that players can get underneath.
The video posted by Reddit user "khentimentu" showcases the player spectating a player that has managed to get underneath the prison.
In contrast to some of the other under-map exploits that have taken place in Season 3, the player is able to shoot their opponent through the ground, not exactly fair when the other player has no chance of finding out where the other is hiding.
As mentioned above, Raven Software has already fixed other areas of the map that players were able to access. Despite no official communication surrounding this latest exploit, it's more than likely that the developer is already working on some kind of fix to be implemented in the coming days.