Westminster, Co., police used every investigative tool to find a suspect in the Oct. 5 abduction and slaying of 10-year-old Jessica Ridgeway, watching video surveillance, combing through hundreds of license-plate numbers, following thousands of tips, and collecting hundreds of DNA samples, reports the Denver Post. The investigation prompted one of the largest criminal searches in Colorado history, with more than 1,000 law enforcers from 40 agencies deploying everything from high-tech forensic science to neighborhood canvassing.
Yet it was a phone call from Mindy Sigg that led police to arrest her son, Austin, 17. That call came a day after authorities announced a definitive link between Jessica’s death and the May 28 attempted abduction of a jogger, information police had known for more than a week. Authorities, citing a judge’s gag order, will not discuss the case with the media, and they have not disclosed what led the mother to call police about her son. Veteran investigators say police often release information strategically to flush out killers.