Following deadly mass stabbing in the western German city of Solingen, German investigators published a poster with a photo of the suspect on Friday, along with an appeal for support. A man killed three people with a knife and injured others at a festival in Solingen on August 23. The alleged perpetrator, a 26-year-old alleged Islamist extremist from Syria, is being held in custody. He was arrested the evening of the day after the attack, on August 24. The poster calls on the public to provide “information about the person pictured and their whereabouts in the period from 23 August 2024 to 24 …