That it was probably an inside job, possibly connected to the Kremlin and Putin, but it's hard to say. What I can say is that Western media has never understood the operations of the Russian government. There are multiple factions inside the Russian government. While almost all are loyal to the Kremlin, the interactions between these agencies sometimes runs amok, and they do things Putin does not condone or support, in their quest to gain power and influence. Sometimes this results in an internal struggle.