GTA Online's San Andreas Mercenaries DLC just came out, and dataminers have already discovered 2023's Halloween event. Everything leaked thus far regarding it is subject to change. It's worth noting that previously rumored content for this expansion has made it to the final product without seeing much change, so the same could theoretically happen with 2023's Halloween event, too. Relevant videos of the datamined content will be provided in this article.There are several parts of the Halloween event for 2023 leaked already. For example, the inclusion will feature a Ghost Hunt collectible sub-event, where players need to photograph apparations. Another leaked activity will involve possessed animals, which makes more sense in the context of the datamines as shown below.Everything leaked about GTA Online's Halloween 2023 event from the San Andreas Mercenaries dataminesfloorball@FluuffballGTA Online 2023 Halloween Possessed Animals Random EventAll possible animals you can encounter below #GTAOnline427GTA Online 2023 Halloween Possessed Animals Random EventAll possible animals you can encounter below ⬇️#GTAOnline https://t.co/XWBw8xFZhPGTA Online players normally can never see animals loitering in the overworld, which makes this Halloween event quite different than usual. The boar shown in the datamine above appears to try and attack the player. Here is a list of animals that can apparently get possessed in the Halloween 2023 event:BoarCoyoteDeerCougarPugTheir models have all been leaked to be a light shade of brown with red eyes similar to the boar shown in floorball's clip above. After the possessed animal is defeated, it disappears in a puff of smoke, leaving some dust behind.Ghost Hunt collectibleWildBrick142 ❄️@WildBrick142Ghost Hunt Collectible-Between 8PM and 6AM, a ghost will spawn at a different location each hour.-There are 10 ghosts that need to be photographed.-Only after taking a photo of all 9 ghosts a special ghost will spawn (spoiler @ 0:29 in video!) to complete the set...#GTAOnline682106Ghost Hunt Collectible-Between 8PM and 6AM, a ghost will spawn at a different location each hour.-There are 10 ghosts that need to be photographed.-Only after taking a photo of all 9 ghosts a special ghost will spawn (spoiler @ 0:29 in video!) to complete the set...#GTAOnline https://t.co/XpIbauZvupAnother big part of the Halloween 2023 event in GTA Online that was datamined for the San Andreas Mercenaries update is Ghost Hunts. This collectible involves players taking a snapshot of ten ghosts between 8 pm and 6 am. Most amusingly, the ghost of Johnny Klebitz is the special tenth ghost that players can take a photo of during this event.WildBrick142 ❄️@WildBrick142The reward for taking all 10 photos is a special livery for the Brigham31440The reward for taking all 10 photos is a special livery for the Brigham https://t.co/0lwJnn7EUJSnapshotting all ten ghosts will give players a livery for the Brigham, as pictured above. Ghosts Exposed is the organization that sets GTA Online players up with this spooky task. Their text message is also visible in the tweet above.Taking a photo of a ghost will provide players with money and RP.Other Halloween contentGTA News 🔴 RockstarINTEL.com@GTAonlineNewsSome more of the upcoming Halloween content that was added into the GTA Online files today.(credit @MaxModz1382)View all: rockstarintel.com/gta-online-san…32545Some more of the upcoming Halloween content that was added into the GTA Online files today.(credit @MaxModz1382)View all: rockstarintel.com/gta-online-san… https://t.co/gxZKUQsLFDUnsurprisingly, there are some new clothes and costumes associated with the spooky festivities this year. Some of the leaked clothes can be seen in the above tweet. Content that's not shown in this post but has been revealed in the Halloween event's datamines includes masks on the following subjects:Two CalaveraA witchA werewolfIt is yet to be revealed how players can get all these items.Liam@billsyliamgtaNew Halloween score in the files #GTAOnline17421New Halloween score in the files 👀 #GTAOnline https://t.co/tINIbKbFhSMusic scores for the 2023 event have also been leaked. Moreover, several props have also been unveiled, as evident in the following tweet.Liam@billsyliamgtaRockstar has been cooking a lot of spooky stuff for Halloween! #GTAOnline40738Rockstar has been cooking a lot of spooky stuff for Halloween! 🎃 #GTAOnline https://t.co/q5nRRdK6LnGTA Online's Halloween 2023 event is expected to be launched sometime in October of this year. The content discussed here (outside of clothes the player can own) is expected to be temporary and will likely disappear after the festivities are over. Any player wishing to partake in this season's horrifying special event would have to do so before it's too late. However, the inclusion is still several months away. San Andreas Mercenaries launched on June 13, 2023, which is also when most of the above leaks were released. More information on the event is expected to come out in the future, especially once October nearer.