US TV network HBO has been the victim of a cyber attack.

The hackers claim they have information about an upcoming Game of Thrones episode.

A script - apparently from next week's show - is one of the things hackers have told the Entertainment Weekly website that they have.

They also claim to have stolen two yet-to-be-seen episodes of other programmes - and say they've even more material.

But HBO isn't confirming what's been taken - only saying it's working with law enforcement agencies.