Sgt. Grant Snyder scrolled through Internet ads and Facebook pages in late July 2012, searching for any sign of recent activity by 17-year-old runaway Bobbi Larson and her friend.
The digital age has made it easier for sex traffickers to hide their business, but it also has handed police new tools. Snyder tried a range of digital techniques.
He tapped away at the laptop on his desk in the Crimes Against Children Unit of the Minneapolis Police Department, searching for leads. Sometimes he sat in his unmarked car between calls on other cases, using a tracking app on his iPhone to hunt for cellphones of suspected victims and traffickers.
In Bobbi's case, the big break came the morning of July 28, when a number associated with Bobbi's friend was discovered in a Backpage.com ad. He tracked the cellphone to a house on Oliver Avenue in north Minneapolis.
As Snyder pulled up and recognized Meranda Warborg in the back yard, he felt even more certain that the girls he had been looking for were sex-trafficking victims. Warborg had been connected to, but was not charged, in one of his previous cases.
"We're looking for two girls," Snyder remembers telling Warborg as he approached her.
She nodded toward the back door. "Inside," she said.
There he found the girls in a back bedroom of the house. Beneath a veneer of makeup and lingerie, Snyder said, they looked gaunt, dazed and tired.