Asked whether he planned to fight on for his proclaimed innocence, Sergeant Nightingale said he had to ask the question: "Realistically can we keep going?".
He said that he had concerns about the "longevity of the family".
More top news
Jeremy Hunt and Liam Fox both warned that attacks by Airbus, BMW and Siemens risked undermining Britain’s negotiations with the EU
Depeche Mode took the Saturday-night headline slot, with other highlights during the weekend including The Killers,Travis and Van Morrison.
The boy was found with knife wounds and died at the scene.