The content originally appeared on: CNN (CNN)A lone gunman opened fire in an auditorium at Heidelberg University in south west Germany on Monday, injuring four people, police said. The perpetrator, described as a young man, is dead, a police spokesman told CNN. Police said the lone gunman began shooting while a lecture was taking place, before running outside. A police spokesperson told Reuters they believe he killed himself. One of those shot in the incident was seriously injured, according to […]