John Wolfgang Alexander Ausonius, known in the media as Lasermannen, is a Swedish far-right extremist convicted of serial murder and 10 bank robberies. Between August 1991 to January 1992, he shot eleven people in the Stockholm and Uppsala area, most of whom were immigrants, killing one and seriously injuring the others. He first used a rifle equipped with a laser sight, and later switched to a revolver. He was arrested in June 1992 and sentenced to life imprisonment in January 1994. Additionally, in February 2018 he was sentenced to life imprisonment in Germany for the 1992 murder of Holocaust survivor Blanka Zmigrod.

Vällingby is a suburban district in Västerort in the western part of Stockholm Municipality, Sweden.