BERLIN - Police in Germany arrested a suspect after a student killed his schoolmate, police said on Tuesday. Die Welt newspaper said a student was stabbed during a scuffle. It said the two students were aged 14 and 15. Police did not say if a weapon had been used. The school in the town of Luenen in the western state of North Rhine-Westphalia was evacuated. In 2009, a 17-year-old gunman killed 15 people in southwest Germany in a shooting spree that started at his former school.