Keyword: Al-Hilli

The 48-year-old is said to be a quiet 'mountain man' and a gun enthusiast but authorities stress he has no direct link with any of the victims.

Arrested man is thought to be brother of Saad al-Hilli, who was gunned down along with his wife and mother-in-law and French cyclist last year.

French prosecutor says clues into the shooting of al-Hilli family last September may be in data stored on US internet servers, but is denied access.

A single weapon was used in the gunning down of four people, including a British family, in woodland near Lake Annecy in the French Alps.