The confirmation follows a report last week which claimed the developer's closure was only a matter of time after it was hit with mass layoffs and a project cancellation.
Sony said in a statement issued to Game Informer:
"Sony Computer Entertainment can confirm the closure of Zipper Interactive, a Seattle-based internal game development studio that has been part of the global development operation of Sony Computer Entertainment Worldwide Studios (SCE WWS).
"The closure is a result of a normal cycle of resource re-alignment within SCE WWS. Zipper has completed all work associated with its most recent project, Unit 13 for PlayStation Vita. Zipper titles MAG, SOCOM 4 and Unit 13 will continue to be supported, including the new Daily Challenges in Unit 13."
The developer is believed to have employed around 80 staff. Our best wishes go out to those affected by the studio's closure.