Sebastian "Bastian" Bosse (29 April 1988 – 20 November 2006) had graduated from the Geschwister Scholl-Schule in 2006. He was generally known by others as "Bastian". While attending the school, he had social problems with classmates and was forced to repeat two classes. He was also known by others to listen to
death metal music, wearing all-black or camouflage clothing and having an affinity for firearms. He reportedly went on hunting trips with his father, a postman. He also posted pictures and videos from a site called
Airsoftspielen, as well as bomb-making videos on a personal website. Additional photos on the website showed Bosse with a variety of weapons, including a
submachine gun, in public. On Sunday evening before the attack, Bosse posted four videos on his website, in which he and another person operated with weapons and explosives. The Rheine district court revealed that Bosse had gone into an open-air event with a gas gun in his possession. He had been drinking alcoholic beverages at the time. Police were alerted to the incident and seized his gas gun. Although Bosse had an insufficient gun license, this didn't bar him from holding such weapons at public events. It was also reported that he was due in court prior to the shooting, on charges of illegal possession of a
Walther P38 pistol. He also left a
suicide note on his website, which has since been deleted. ==Aftermath==