UPDATE: Sony has told MCV that the theft occurred during a "violent assault" and that the game's release date remains as May 10.
It goes on to say that it has "yet to ship any stock" of the game to retail and, as such, "any suggestion that UK retailers have broken the official street date is not correct".
"We can confirm that unfortunately some contents from a lorry transporting a variety of video game and DVD titles, including a quantity of the much anticipated Uncharted 4: A Thief’s End, was stolen in the UK, during a violent assault," a spokesperson told MCV.
"We are doing everything in our power to assist the police in their ongoing criminal investigation. To be clear, we have yet to ship any stock of Uncharted 4: A Thief’s End to retail and so any suggestion that UK retailers have broken the official street date is not correct.
"The official release date of Uncharted 4: A Thief’s End remains May 10th.
"We would like to reassure our players and partners that we are taking all possible steps to make the launch of Uncharted 4: A Thief’s End the success it deserves to be for the millions of fans of Naughty Dog and the Uncharted series."
ORIGINAL STORY: Sony has said that it is working with police to investigate the theft of "a number of copies" of Uncharted 4: A Thief's End that were "stolen while in transit".
Speaking on PlayStation Blog, Sony Interactive's president of Worldwide Studios Shuhei Yoshida described the theft as "unfortunate", and said that it "appears that a few copies of the game have surfaced in the UK".
"We have some unfortunate news to report that a number of copies of Uncharted 4: A Thief’s End were stolen while in transit," Yoshida said. "While we are continuing to work with the police to resolve the matter – which is the subject of an ongoing criminal investigation – it appears that a few copies of the game have surfaced in the UK.
"We know that very many of you have been looking forward with great anticipation and excitement to the latest masterpiece from Naughty Dog. From what I have played of Nathan Drake’s latest adventure, I can tell you that it is very much worth the wait. As with most Naughty Dog games, the unfolding story is such an integral part of the experience and for this reason we wanted to warn you to beware of the potential for spoilers to be posted by people with access to stolen copies of the game.
"An extremely talented team has worked long and hard to bring Nathan Drake’s greatest adventure to life and we would urge you to help us prevent this from being spoilt by purchasing copies of the game ahead of the launch date. Please rest assured we will be very vigilant to protect you from this as far as we can so you can enjoy Uncharted 4’s experience to its fullest on May 10th."
Yoshida's comments follow a report by VideoGamer.com yesterday revealing that at least one UK gamer had managed to purchase a copy of the game over two weeks ahead of its official release. A second gamer also told us that they had managed to secure a copy from eBay last night.
The theft follows days after it was reported that "thousands of pounds" worth of Nintendo games had been stolen from a lorry in Northamptonshire. It isn't clear whether the thefts are related.