The story of a man accused of kidnapping and torturing a woman in Oregon, then using dating apps to contact other unsuspecting individuals, is raising fresh concern about how to stay safe when dating online.

Authorities said Friday that they believe Benjamin Obadiah Foster, 36, was using the apps to find potential new victims or people to help him evade arrest .

The search for Foster ended Tuesday in an hourslong standoff with police . In the process, Foster died from a self-inflicted gunshot wound, a Grants Pass Police Department spokesperson told a local CBS affiliate . Police say they believe he may have also been responsible for a double homicide in the same area .