Explosion-related deaths in Sweden--a forensic-pathologic and criminalistic study.

All cases of death caused by explosions of explosive solids, fluids and gases in Sweden during the 6-year period 1979-1984 were analyzed. Among the total of 61 fatalities 33 (54%) were due to accidents (2/3 of them occupational and 1/3 miscellaneous accidents), 25 (41%) were suicides, and only 3 (5%) were associated with terrorist activity. About one half of the occupational accidents were caused by deficient safety devices or defective equipment, while the other half was due to transgression of regulations. All suicides were males, relatively elderly, the majority of them burdened with somatic and mental diseases, alcoholism, social or economical problems, most of them being familiar with explosives. The anatomical localization of suicidal explosive injuries was regular and symmetric, while the accidental and terrorist injuries showed great variations. The terrorist-associated deaths had common features different from all other death cases, strongly suggesting the same type of bomb and the same terrorist group. Explosives caused only superficial burns or singes. Symmetric hemorrhages of the vocal folds and fracture of the laryngeal skeleton were found, as well as ruptures of trachea and lungs. When not ruptured, the lungs showed to different types of injury: hyperinflation, probably due to the blast-induced barotrauma to the respiratory passages, or lung contusions. In cases of suspected terrorist explosions close collaboration between the forensic pathologists and police investigators is mandatory since the bodies of victims protect parts of the bomb from fire or from being spread over a larger area and thus constitute a part of the crime scene.