In Solingen, Germany, an unknown assailant attacked festival-goers with a knife during the city’s 650th anniversary celebrations. The police report casualties and injuries but have not disclosed exact numbers, according to FAZ. The police have deployed helicopters. The attacker has not yet been apprehended. Local authorities have requested residents to leave the city center. The festival has been called off, and sirens are audible throughout the city. One of the festival’s co-organizers announced from the stage that emergency services are fighting to save the lives of nine people. In recent de…