Altus Police Chief Tim Murphy told reporters that 24-year-old Marielle Trey Smith and 22-year-old Ryan McKenzie Fields were arrested Thursday and returned to Jackson County.
Smith is jailed on $500,000 bond on a second-degree murder charge and Fields is being held on $250,000 on a charge of being an accessory after the fact.
Court records do not list an attorney for either suspect.
Police say they believe Smith killed 32-year-old Jared Allen Holmes in Altus on Aug. 20 and took his body to neighboring Tillman County, where it was found near Frederick two days later.
Fields is suspected of helping clean the crime scene and moving the body.
Copyright 2018 The Associated Press. All rights reserved. This material may not be published, broadcast, rewritten or redistributed.