Could Shisui be alive?

[KayaUzumaki]

kill your best friend, get MS. he's dead
my extreme skepticism is lurking here, Are you really Mr. Kishimoto?It seems severely doubtful that Mr. Kishimoto would come to a forum

It has been stated that Itachi didn't kill him though. Shisui allegedly committed suicide.
And no I am not Kishi. lol