OSAGE, Iowa – Additional charges have been filed against the man arrested for a nature trail assault in Osage. 48-year-old Dewayne Alan Bethke of Osage is now accused of failure to comply with exclusion zone-sex offender registry, a class C felony, in connection with the alleged assault of a woman on the Harry Cook Nature Trail on June 10. He is charged with serious assault for that incident. Bethke is also accused of third degree burglary, a class D felony, for a burglary reported to authorities on June 11. He is being held in the Mitchell County Jail on $13,000 bond.