You don't need to know the details.
A simple, 'We have confirmed that it was indeed, a suicide" would have sufficed.
As Fiverings was pointing out, the Dr Kelly case is a perfect example of where the authorities telling the public it's a suicide is simply not enough. Sometimes knowing the details can put the mind at rest and sometimes, like with Dr Kelly, it can leave you feeling skeptical.
The public feels that they are owed personal details like that.
I don't know where you get this idea from. Just because the media try their best to get the details because the public find a story interesting does not mean the public feel entitled to those details.