Düsseldorf authorities have arrested 40 men in a raid on the city's so-called "Maghreb" neighborhood.German officials say men from North Africa have drawn their attention with involvement in criminal activities.This daily subjection to sexual violence must have had an immense influence on the boy who, aged 9, formed an unhealthy relationship with a dog-catcher living in the same building, who introduced him to the practice of bestiality, carried out initially on dogs.
Local police urged people not to speculate about the motive for the attack, dismissing unfounded claims as "useless".
Anti-terror police have sealed off Dusseldorf station in Germany after reports of an attack involving a man armed with an axe.
Five people are believed to have been injured and images posted on social media showed paramedics treating the wounded.
The Düsseldorf Carnival Committee has canceled the city's parade because of the approaching low-pressure system Ruzica.
With major carnival city Mainz also calling a rain check, the duties fall to Cologne's revelers.