When police raided the home of convicted sex offender Phillip Garrido and freed Jaycee Lee Dugard, a girl who'd been kidnapped 18 years earlier, they were astounded to learn that more than 100 other sex offenders lived is the same area.
What they discovered is a trend that has been raising concerns among cops, local officials and experts across the country who study efforts to rein in sex offenders.
It is called clustering -- and it is raising alarms from coast to coast, from Florida to Iowa to California.
As states and municipalities have enacted laws that bar registered sex offenders from living near schools, playgrounds and other places where children congregate, they have been forced to settle down in more remote, often rural, areas where restrictions haven't been imposed or there is enough space to avoid them. [...]