Michael Jackson’s entire back catalogue, including unreleased material from the Thriller, Bad and Off the Wall sessions, has reportedly been stolen by hackers.

The Sunday Times report [via NME], that “Everything Sony purchased from the Michael Jackson estate was compromised. It caused them to check their systems and they found the breach. There was a degree of sophistication. Sony identified the weakness and plugged the gap.”

Sony Music paid the late singer’s estate over 150 million for the back catalogue in 2010 and released the first swathe of tracks from it at the end of that year with the posthumous album Michael. The tracks stolen also include duets with Queen’s Freddie Mercury and Black Eyed Peas wally will.i.am.