It happened in the heart of Stockholm. Four young men felt offended, rejected. It ended in a violent massacre. The murders at Stureplan was an act of violence that took place on December 4, 1994 in Stockholm. A guard and three guests were killed at the Sturecompagniet nightclub when Tommy Zethraeus, according to the conviction, opened fire straight into the entrance. Guillermo Marquez Jara was also convicted of assisting in gross negligence until another's death. At the shooting, doorman Joakim "Jocke" Jonsson and three pub guests were killed: Kristina Oséen, Katinka Genberg and the deaf author Daniella Josberg. All killed were 21 or 22 years old.