Professional hit in the Alps - why?

[Carsten Wiethoff]

From http://www.theweek.co.uk/europe/57368/al...-al-hillis

ERIC DEVOUASSOUX, the "taciturn mountain man" arrested on Monday by police investigating the September 2012 murder of the British-Iraqi al-Hilli family near Lake Annecy, has been cleared of any involvement in the crime. As a result, policy custody was officially lifted this morning.
However, Devouassoux remains in custody under new terms while police investigate whether he should be charged for arms trafficking, the local website, Le Dauphine, reports.
In searching his property for the murder weapon used to kill the al-Hillis and the cyclist Sylvain Mollier, police found a cache of World War Two weapons and other munitions. They later found more of the same at the home of a friend of his, who was also taken into custody.

and

ANOTHER blow for those hoping the French might have caught the murderer of the al-Hilli family: the DNA of Eric Devouassoux does not match the DNA found at the scene of the crime.