Purpose. To investigate whether and to what extent the thematic structure of crime scene actions in arsons identified in Canter and Fritzon (1998) is replicated for juvenile firesetters and to explore whether any associations between the crime scene action themes and offender characteristics would be evident.Methods. The crime scene actions and offender characteristics of 61 male and 5 female juvenile firesetters (aged 6‐17 years) were examined. The data were drawn from a larger database originally collected and content analysed in Fritzon (1998). In total, 43 dichotomous crime scene actions, 17 offender background characteristics and offender criminal record variables had been coded. Smallest space analysis was employed to examine the configuration of crime scene action and offender characteristic variables. The associations between the crime scene actions and offender characteristics, as well as the criminal record variables, were analysed using the correlation.Results. Distinct structural themes for crime scene actions were found in juvenile firesetting, similar to those identified in Canter and Fritzon (1998). Contrary to Canter and Fritzon, only two groups of background characteristics were identified, depressed and delinquent, the latter being more common and related to an instrumental form of firesetting. The expressive form of firesetting was associated with offenders' psychopathology and female gender. The presence of a crime scene action theme was associated with the offender's age.Conclusions. The structural themes of firesetting behaviour appear to transpire early. The background characteristics of juvenile firesetters indicate that juvenile firesetting is often associated with antisocial behaviour and psychopathology, deserving, therefore, disparate prevention, intervention and investigation programmes.