Billionaire American media mogul Sumner Redstone has died.
Redstone took a drive-in movie business he bought from his father and turned it into a media empire that included the likes of CBS, Viacom, Paramount Pictures and Comedy Central.
He also helped develop the multiplex model for movie theatres.
He relinquished the chairmanship of CBS in 2016 after an examination of a psychiatrist.
Sumner Redstone was 97-years-old.