It has been confirmed by the company itself that Konami has shut down Kojima Productions Los Angeles game dev studio, Polygon says.
Konami sent the following message to Polygon about the closure of Kojima Productions Los Angeles:
“Konami has made the decision to close its Los Angeles Studio, effective immediately, due to the product development resources being restructured into a more centralized unit,” Konami said. “This facility contributed to the recent Metal Gear Solid games. Konami will continue its operations to support all Metal Gear Solid titles, including the recently launched Metal Gear Solid 5: The Phantom Pain and Metal Gear Online. Metal Gear Online is still scheduled to release for PC Steam in January 2016.”
Kojima Productions Los Angeles, later known as Konami Los Angeles Studio, was formed in 2013 as a way to develop games in this side of the world, as an expansion of game development for Konami. However, internal problems between game producer Hideo Kojima and top members of Konami brought down the name Kojima Productions from web sites and game box art, a move by Konami that fans of the franchise did not like.
[Source]: Polygon: Konami confirms closure of Kojima Productions Los Angeles studio.