Its not possible that, in possession of his laptop and his email account, having searched his houses, and with his bank account, they do not know the motive.
The fact that they keep investigating trying to deduce the motive tells me they know the motive and don’t like it. Or, as some suggest, he’s the patsy. So they start parsing and slicing words.
The longer they go, the less I believe.
Its not possible that, in possession of his laptop and his email account, having searched his houses, and with his bank account, they do not know the motive.
They might have some theories about motive, but very possible they do not know. After all, he is dead, and was a pretty secretive guy.
About a third of the population are introverts, and do not expose their inner thoughts to the general public.