A sign which reads: "Why?" is pictured between candles near the Albertville-Realschule school where a shooting incident took place in Winnenden March 11, 2009. A 17-year old gunman went on a shooting spree at his former secondary school, the Albertville-Realschule in Winnenden in southwest Germany on Wednesday, killing up to 15 people before dying himself in a shootout with police at the car dealer, authorities said. [Agencies]