Lee Roy Williams, 51, pleaded guilty to four counts of first-degree murder Tuesday afternoon, just hours after a grand jury returned the four-cout indictment.
He took the plea in exchange for not facing the death penalty.
Angered over news he was being thrown out of mobile home they shared, he killed 28-year-old Crystal Dawn Fruge, 29-year-old Kendrick Warren Lavergne, 19-year-old Terry Lynn Banks and 26-year-old Jessica M. Eugene.
All but Eugene were shot --all but Lavergne suffered multiple stab wounds and blunt force trauma.
The quadruple murder occurred at Fairview Estates Mobile Home Park.
According to court testimony, Williams used a .380-caliber pistol to shoot Lavergne in the back of the head and shoot Banks in the head, after which he turned his attention to the two women, who were at the rear of the trailer.
Williams shot Fruge. The bullet went through her shoulder and into a wall, where it was found later by deputies.
He then confronted Eugene in the hall, where he struck her with a baseball bat. The force of the blow knocked her into a bathroom, where Williams continued to beat her with the bat and stabbed her repeatedly.
Williams returned to Fruge and used both the bat and the knife on her. After killing her, the defendant went back to the front of the trailer, where Banks had crawled to near the door.
Williams pulled the victim back, beat him with the bat and stabbed him several times.