From KHQ-TV:

Court records show 52-year-old Plank arranged to meet a 15-year-old girl in a hotel room for sex in exchange for Xanax and cash. However, the girl Plank agreed to meet didn’t actually exist and he was actually communicating with police officers the entire time. 

The investigation started earlier in the month when detectives received information that Plank “had a habit” of having sex with young girls in exchange for Xanax. Police then began communicating with Plank.Detectives say Plank agreed to meet the “girl” Thursday afternoon at a motel on Sunset Highway. When Plank showed up at the agreed upon meeting time to the agreed upon room, officers arrested him. 

After being read his Miranda rights, Plank told officers “I know you guys aren’t trying to entrap me, but this is embarrassing. I’m friends with Ozzie (Knezovich),” according to court documents.