Slawson shot Carder at the vacant house as Smith hid in a closet; Whiteside sped off as Slawson fired the pistol at him, according to the affidavit.
Carder managed to get out of the house and collapsed in a ditch across the street.
Smith called 911 and reported she heard shots fired but didn't know what had happened to Carder. Smith was “misleading,” and deputies were unable to find her at the scene, said Chief Deputy Richard Stephens, a Logan County sheriff's investigator.
Carder was convicted in 2009 of rape. The case involved Carder and a woman who provided teenage boys with sex in exchange for drugs.
The affidavit states Slawson drove to a relative's house for the night.
Stephens said Carder's body was discovered about 9 a.m. Friday by a passer-by at S Bryant Avenue near Simpson Road. Smith had Slawson's cellphone number on her phone, and he was arrested later that day.
The affidavit states Slawson told investigators he has been killing animals, mostly cats, for the past couple of years.
Slawson is being held without bail in the Logan County jail.