What kind of person thinks that Muslims shouldn't serve in an army that's fighting the Taliban, and that Jews shouldn't be permitted to reproduce - and makes both points with a revolver?
It's hardly a question to baffle a Clouseau, never mind a Maigret. Once it became clear that Toulouse wasn't hosting a gunmen's convention, I'd have said "neo-Nazi" was a 50-to-1 shot, and "apolitical nut job" more like 200-to-1.
Of course it's always a good idea to wait until you have some facts before rushing to judgment, otherwise you could end up looking extremely silly. Not, however, that this fate could overtake anyone delivering an ex cathedra verdict on behalf of the World's Most Righteous Newspaper: Fiachra Gibbons said Sarkozy was to blame, and you can be sure that he feels amply vindicated.
I see that last year "Turkey specialist" Gibbons offered the Guardian a piece on "10 of the best films set in Istanbul". Apparently none of them deal with the city's synagogues. Quelle surprise.