 And a Santan Valley man accused of sexually assaulting more than a dozen girls has struck a plea deal. Tyler Kost was in court today. He pleaded guilty to multiple charges, including attempted sexual conduct with a minor and sexual abuse. 30 of the counts against him were dropped. He could face up to seven years behind bars. Most of the girls he's accused of sexually assaulting were former Poston Butte high school classmates.