About Peter Madsen
Peter Langkjær Madsen (Danish: [ˈpʰe̝ˀtɐ ˈlɑŋˌkʰeˀɐ̯ ˈmæsn̩]; born 12 January 1971) is a Danish convicted murderer and former entrepreneur. In April 2018, he was convicted of the August 2017 murder of Swedish journalist Kim Wall on board his submarine, UC3 Nautilus, and sentenced to life imprisonment. On 1 May 2008, Madsen co-founded Copenhagen Suborbitals with Danish architect Kristian von Bengtson. When police discovered that he was in possession of a pistol-like object and was wearing a belt that could potentially contain explosives, he was surrounded until bomb experts had determined that it was a decoy. Madsen continued to experiment and to consult engineers, and became friendly with the family responsible for the fireworks in Copenhagen's Tivoli Gardens.
Biography source: Wikipedia. The profile adds birthday-specific historical context from the Celebs Birthday Today editorial database.