A Briton fighting in Syria "turned the gun on himself" to avoid being taken prisoner by so-called Islamic State, Kurdish sources have told the BBC.
Ryan Lock, 20, from Chichester in West Sussex, died on 21 December during a battle for the IS group's stronghold of Raqqa.
He was fighting as a volunteer with the Kurdish armed fighting forces, the YPG.
The YPG told the BBC that "trace of a gunshot wound was found under the chin", suggesting suicide.
Sources said five fighters came...