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Abstract
GIS in the Spokane Serial Killer Task Force Investigation
Track: Law Enforcement and Criminal Justice
Author(s): John Bottelli, Ariane Schmidt, Laurie Anderson
The Spokane County Sheriff's Office and the Spokane Police Department used GIS in their two-year investigation of the Spokane Serial Killer. Victims were geographically classified using ArcView GIS. Suspect tips were geocoded for spatially relevant events that coincided with known activities of the serial killer. The USGS Animal Movements extension was used to generate the Jenrich-Turner home range of victims and known key modus operandi evidence. The centers of the calculated ranges were within 12 blocks of the suspect's residence. Using ArcInfo, information from the arrested suspect's GPS transmit/receiver was calculated into a common projection and datum and combined with State-wide data downloaded from federal Web sites. The resulting map has been distributed to law enforcement agencies in Washington State and several unsolved cases have reopened.
John Bottelli
Spokane County
815 N Jefferson
Spokane, WA 99260
USA
Phone: 509-477-6344
Fax: 509-477-7494
E-mail: jbottelli@spokanecounty.org