"According to the Federal Bureau of Investigation, 53 percent of arrests for arson are children under the age of 18. Approximately one-third are under the age of 15. Despite decreases in other indicators of juvenile violent crime (e.g., murder, aggravated assault), the incidence of juvenile arson is on the rise." This report, revised December 2001, addresses the causes and characteristics of these fires.
United States Fire Administration: http://www.usfa.dhs.gov/
United States Fire Administration Topical Fire Research Series (January 2001), v.1 no.6