If you have any true understanding of third world politics you know there isn't any such thing. Or at least as we in America understand ‘splinter groups”.
In any dictatorship “splinter groups” are suppressed almost as violently as the newspapers and TV stations. Both groups represent a direct, and leathal, threat to the ruling regime and their families. How many dictatorships have been overthrown where the dictator and his immediate family were able to survive?
“Libyan jihadist splinter group” is a convent fiction used by the existing government to carry out political operations that they can not be associated with.
Let's look at the time line for capturing four members of this “Libyan jihadist splinter group”. The assassination of our ambassador took place Tuesday night. By Wednesday the Libyan government and found and arrested one man; 24 hours later that had three more. How could they move so quickly and effectively against a violent “Libyan jihadist splinter group” when that group's very survival since its inception depended on it remaining invisible to the governing authorities who, 18 months ago, were a “ Libyan jihadist splinter group” themselves?