The fourth episode of "Game of Thrones" season seven has landed online ahead of its Sunday premiere.
The leak comes just days after HBO suffered a major cyber attack.
However, according to a spokesperson from HBO, the leak was related to one of HBO's distribution partners, Star India, and had no relation to the hack, Los Angeles Times reported.
"This confirms the compromise of episode 4 of 'Game of Thrones' Season 7, earlier this afternoon. We take this breach very seriously and have immediately initiated forensic investigations at our and the technology partner's end to swiftly determine the cause
"This is a grave issue and we are taking appropriate legal remedial action," a statement from a Star India representative told the newspaper.
The news of hack first broke out on Tuesday when the hackers reportedly released a handful of unaired episodes of HBO shows, as well as other internal data, online.
The network has acknowledged the hack, but has not yet given out any details about the types of files hackers were able to obtain.