Now after 10 days of investigations, the subsidiary of 21st Century Fox has been able to track down those responsible for illegally releasing the episode.
Deputy Commissioner of Police Akbar Pathan said the four men arrested are accused of criminal breach of trust and computer-related offences and would be detained until August 21.
"We investigated the case and have arrested four individuals for unauthorised publication of the fourth episode from season seven," he told AFP.
Authorities claim the men were employees of Mumbai-based company responsible for storing and processing the TV episodes for an app and had official credentials giving them access.
HBO partner Star India said it was pleased with result.
"We are deeply grateful to the police for their swift and prompt action. We believe that valuable intellectual property is a critical part of the development of the creative industry and strict enforcement of the law is essential to protecting it," the company said in a statement.
"We at Star India and Novi Digital Entertainment Private Limited stand committed and ready to help the law enforcement agencies with any technical assistance and help they may require in taking the investigation to its logical conclusion."