Czechoslovakia On 14 September 1990, less than three months following his release, Unterweger met 30-year-old butcher shop employee
Blanka Bočková while in
Prague. Bočková's body was found the next morning near the
Vltava River, with signs of both manual and ligature strangulation.
Austria Between October 1990 and May 1991, Unterweger killed at least seven women in Austria. The victims were sex workers, two of whom were unregistered, with several of them having been previously solicited by Unterweger. The women were driven outside of town, beaten, raped, and left in forested areas. All were manually strangled, which was the cause of death for most, while some were asphyxiated with underwear such as bras, pantyhoses or stockings. • 27 October 1990,
Graz: 41-year-old
Brunhilde Masser. Found on 26 January 1991 in
Gratkorn. • 5 December 1990,
Bregenz: 31-year-old
Heidemarie "Heide" Hammerer. Found on 31 December 1990 in
Lustenau. • 7 March 1991, Graz: 35-year-old
Elfriede Schrempf. Found on 5 October 1991 in
Lichendorf. • 8 April 1991, Vienna: 23-year-old
Silvia Zagler. Found on 4 August 1991 in
Wolfsgraben. • 16 April 1991, Vienna: 25-year-old
Sabine Moitzi. Found on 20 May 1991 in
Mödling. • 28 April 1991, Vienna: 33-year-old
Regina Prem. Found on 16 April 1992 in
Döbling district, on
Hermannskogel. • 8 May 1991, Vienna: 25-year-old
Karin Eroglu-Sladky. Found on 23 May 1991 in
Gablitz. During the same timeframe, Unterweger maintained several relationships, including with journalists, lawyers, prostitutes, and teenage students. For much of this time, he lived with Margit Haas, a wealthy journalist for the magazine
Wiener. Rudolf Prem, the husband of Regina Prem, had made extensive efforts to locate his wife and offered 10,000 schillings as a reward. For three months, from May to July 1991, Rudolf was taunted over the phone by several prank callers, including Unterweger. Back in Austria, Unterweger was suggested as a suspect for the sex worker murders. In the absence of other suspects, police took a serious look at Unterweger and kept him under
surveillance until he went to the U.S., ostensibly as a reporter; the police observed nothing to connect him with the killings. Through autumn 1991, Unterweger was questioned twice by Vienna Police Councillor . On 8 October 1991, Unterweger called Rudolf Prem again and falsely named as the site where he had left Regina, also referencing a total of eleven victims. Following Unterweger's arrest, Prem handed police his wife's diary containing descriptions of previous meetings with Unterweger, which supported his continued penchant for bondage and physical violence during sex.
Arrest and death Police in Graz eventually gathered enough evidence to arrest Unterweger, but he had fled by the time they entered his home. After law enforcement agencies chased him and his girlfriend, 18-year-old Bianca Mrak, through Switzerland, France, and the US, he was finally arrested by
US Marshals in
Miami,
Florida, on 27 February 1992. On 29 June, Unterweger was sentenced to life in prison without possibility of parole. That night, Unterweger killed himself at
Justizanstalt Graz-Jakomini by hanging himself with a rope made from shoelaces and a cord from the trousers of a tracksuit, using the same knot that was found on all the strangled sex workers. Prior to his death, Unterweger had asserted his intention to seek an
appeal, and therefore, under Austrian law, his guilty verdict was not considered legally binding after his death, as it has not been reviewed and confirmed by the court. == See also ==