Three Cases of Planned Complex Suicide / 대한법의학회지

Complex suicide refers to a type of suicide that leads to death using two or more methods. We report three cases of unique and rare examples of complex suicide, with the plan of the second and/or third method working simultaneously if the first suicidal attempt had failed. In the first case, the victim used three methods of asphyxia: hanging by a safety belt, plastic bag suffocation, and self-ligature strangulation by stretching rubber bands within the vehicle. In the second case, the victim hanged himself with electrocution by attaching electrical leads to the right side of his head. In the third case, the victim with the intention of drowning jumped 20 m above the water surface on the bridge by tying metal chains to the bridge rail and self-immolation by gasoline. Planned complex suicide involves more successful methods to commit suicide and may conversely be camouflaged as suicide in murder case.

Significance of Knife Tip Injuries as Hesitation Marks / 대한법의학회지

Hesitation wounds are tentative, superficial incised wounds around the fatal wound(s). This study aimed to investigate the frequency and characteristic features of hesitation wounds including ordinary incised wounds and knife tip injuries as hesitation marks from the autopsy cases of suicides using sharp force instruments. The subjects were 478 cases out of 3,131 suicide cases autopsied at the Department of Forensic Medicine, School of Medicine, Kyungpook National University in Daegu, from August, 2001 to 2013. 48 cases (approximately 10%) were suicides using sharp force instruments. In 27 cases (56.3%), the sharp force was successfully applied causing suicide; 17 cases (35.4%) were so called complex suicide cases, in which two or more different methods including sharp force injury were used; and the 4 remaining cases were suicides caused by other reasons. Overall hesitation wounds had a high frequency of 33/48 cases (68.8%). The frequency of cases in which knife tip injuries were found was lower, appearing in 13/33 cases (39.3%). The most preferred sites of knife tip injuries were the abdomen (9 cases), neck (4 cases), chest (3 cases), and face (1 case) in these 13 cases, including several overlapped cases. The average number of knife tip injuries was 14.6. A total of 88.2% of knife tip injuries was found near the incised hesitation wounds or fatal wounds. In conclusion, knife tip injuries may be a significant factor in identifying hesitation wounds, and they should be precisely examined and evaluated during autopsies to determine the manner of death.