Clark Oderth Olofsson (later known as Daniel Demuynck; born 1 February 1947), is a Swedish criminal. He has received sentences for attempted murder, assault, robbery, and dealing narcotics and has spent more than half of his life in prison in Sweden. Olofsson has been called Sweden's first "celebrity gangster". Olofsson was present at the Norrmalmstorg robbery whose events resulted in the creation of the phrase "Stockholm syndrome" to describe them. Biography Early years Olofsson was born on 1 February 1947 in Trollhättan, Sweden, into a home with extensive alcohol problems. Olofsson had two younger sisters. His mother was a cashier and his father an asphalt worker. When Clark was 11 years old, his father left the family and soon after, his mother felt ill and was admitted to Lillhagens psychiatric hospital in Hisings Backa. Her problems led to the three children being placed in foster care. Olofsson was unhappy in his foster family and to get out of there, he forged his mother's signature and enrolled in a sailors' school. On the ship Ballade, a 14-year-old Olofsson sailed around the world, including between Japan and South America. When he was 15, he disembarked from the boat and moved home to his mother, who had regained control of her life, and started working in a shop. The children were returned to her care and they moved to an apartment in Slätta Damm on Hisingen, Gothenburg. There he was a neighbor of future journalist Janne Josefsson. The family later moved to Köldgatan in Biskopsgården. 1960s–1980s For several petty crimes, sixteen-year-old Olofsson was placed in a behavioural institution for young offenders in 1963. Olofsson and two other boys escaped from the institution in August 1965 and entered the country estate of Swedish Prime Minister Tage Erlander at Harpsund, where they stole grapes, cucumbers and tomatoes from the greenhouse. They fled when the gardener discovered them. Three months later, Olofsson assaulted two police officers in Eskilstuna. On 4February 1966, he was sentenced to three years in prison; this was his third sentence and his first real prison sentence. In late 1966, he made his first escape from the prison at Tidaholm. On 29July 1966, police officers Ragnar Sandahl and Lennart Mathiasson responded to a burglary at a bicycle shop at Skjutsaregatan in Nyköping. Sandahl was shot and killed by Gunnar Norgren. The other burglar was Olofsson, who became a nationally known criminal. Norgren was