Apparently it was suicide by asphyxiation. He must have been in a really dark place and I remember reading somewhere that he was also suffering from depression.
Just had a look back on iPlayer of BBC News, they were just ending Sportsday, and then 'The film star...' appeared on the ticker before it was removed for the weather.
As someone who's been treated for depression myself (and I'm not afraid to hide that fact, even on here) I know first hand how it can grip you, especially if you're male and feel you can't talk about it.
Sadly suicide rates among men are at one of the highest rates they have ever been worldwide and it's sad little is done to raise awareness and help those to open up.