Prosecutors allege Marks killed the 28-year-old Scott and 32-year-old Swearingin in the Texas city of Killeen. Their bodies were found buried a week later in Clearview, Oklahoma.
Also known as “Spider-Man” during his professional fighting career, Marks escaped from a private prisoner transportation van following his arrest in Michigan in February. He was recaptured nine hours later.
Maya Maxwell, Marks’ girlfriend, also faces charges in connection with the double murder.
Marks, 45, has a record of 30-27 during his Mixed Martial Arts career, according to the “Sherdog” website. His last fight was in March of 2018.