The upcoming episode of HBO's "Game of Thrones" has been leaked online but the network says it's not the result of a recent hack.
Media company Star India acknowledged Friday that it was the source of the leaked episode and said it is investigating how it happened.
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The news comes just days after HBO said hackers had broken into its systems and stolen "proprietary information." HBO, however, said that Friday's leaked "Game of Thrones" episode was not a part of that hack.
Episode 4 of the show's seventh season is due to air Sunday.
Star India, a subsidiary of 21st Century Fox, reaches more than 700 million viewers a month across India and more than 100 other countries.