Some gamers got a pleasant surprise when their copy of "GTA 5" arrived four days ahead of schedule. Rockstar Games on the other hand is not pleased. The developer asked online distributors to not send out copies until Monday, Sept. 16 and is currently investigating how the games got out. One of the culprits in the release is Amazon.co.uk, which distributed some copies of the games earlier this week, while other vendors are selling it on the shelves. Stores in Spain claim that the game is now available for purchase nationwide, while a French distributor said it would be selling advanced copies through Facebook.

"We are in the process of investigating early 'sales' to determine how and why that is occurring," Rockstar Games said in a statement. The game is not due out to the public until Tuesday. A Playstation Network preload version of the game will be made available 3 p.m. Sunday. Storefronts only just received their shipment of the game Saturday, and the undue online release may prompt some of them to start handing them out early to keep up with the competition. "GTA 5" is one of the most anticipated games of the year and is expected to rank in the sales, with an estimated 18 million units to be sold. Rockstar has not yet said what it will do about the early release of the game.