Rockstar is "investigating" how and why copies of Grand Theft Auto 5 have arrived with some customers ahead of the game's official release, after requesting that online retailers do not dispatch copies until tomorrow, September 16.
Some Amazon.co.uk customers received their copies of GTA 5 yesterday - four days in advance of the game's official street date - with other retailers across Europe reported to have been selling the title on the high street.
In a statement issued to GamesIndustry International this morning, Rockstar said that it is "in the process of investigating early 'sales' to determine how and why that is occurring."
Rockstar is thought to have placed strict guidelines on the sale of Grand Theft Auto 5, having requested that UK online retailers do not dispatch copies until the day before release.
It isn't yet known how the publisher will react to early sales or whether it will penalise Amazon for dispatching copies to customers early.
GAME says there's still time to secure a copy of GTA 5 for delivery tomorrow.