An unknown man carried out the attack at a crowded festival in the western German city of Solingen, killing three people and wounding at least eight others, four of them seriously.A 15-year-old boy was arrested early on Saturday.Police said he was suspected of knowing about the planned attack and not informing authorities, but he was not the attacker.

An unknown man carried out the attack at a crowded festival in the western German city of Solingen, killing three people and wounding at least eight others, four of them seriously.A 15-year-old boy was arrested early on Saturday.Police said he was suspected of knowing about the planned attack and not informing authorities, but he was not the attacker.