Uncle of the two suspects says they 've brought shame on all Dagestan . Chechen rebels started out fighting for independence from North Caucasus in recent years . Conflict has racked the North Caucasus region for almost two decades . Chechens and al Qaeda have seen violent attacks in recent years .
Uncle of the two suspects says they 've brought shame on all Chechens . Chechen rebels started out fighting for independence from Moscow in the 1990s . Conflict has racked the North Caucasus region for almost two decades . Dagestan and Ingushetia have seen violent attacks in recent years .