Rebecca Bowers Sears, 41, and her son, Christopher Sean Bowers, 19, were charged with conspiracy to commit murder in the death of a 41-year-old Laverne Katherine Parsons.
Mrs. Parsons, of 229 Hot Springs Drive, was found beaten in her home Wednesday morning.
Ms. Sears, of 227 Hot Springs Drive, and Mr. Bowers, of 4086 Briarwood Drive, Martinez, were arrested Friday just before midnight, said Columbia County sheriffs Capt. Steve Morris.
The past 72 hours have been busy, yet very productive, he said Saturday morning.
Authorities believed Mrs. Parsons was attacked at her home in Orchard Hill subdivision at about 9 a.m. Wednesday after she returned home from dropping off her son at school.
Capt. Morris said search warrants were executed at the residences of Ms. Sears, Mrs. Parsons and Mr. Bowers. Ms. Sears Infiniti also was seized by police, he said.
Police also obtained a search warrant for Healing Hands Physical Therapy Center on Highland Avenue, where Ms. Sears works. Ms. Parsons had worked in the Thomson location of the therapy center, according to the companys Web site, which was taken down Friday.
Ms. Sears was shot in the leg Thursday night outside her workplace, according to Richmond County police.
Police initially thought Mrs. Parsons walked in on a burglary at her home. Deputies found her lying on a garage floor next to a baseball bat and claw hammer, the weapons used to attack her, said Columbia County Deputy Coroner Harriett Garrison.
A Friday autopsy revealed that Mrs. Parsons died of blunt force trauma to the head, Mrs. Garrison said.
A contractor who arrived to work at the home Wednesday called police to report glass from a French door at the rear of the home had been shattered.
When deputies arrived at Mrs. Parsons home Wednesday, Ms. Sears and her sons also were present, according to a police report. However, the report did not specify the names of the sons.
Ms. Sears initially followed a deputy as he first entered her home, but was escorted back out when the deputy saw blood on a couch and living room rug, according to the report. The deputy also said he found blood on the walls and floor.
On the same day as the break-in at Mrs. Parsons home, Ms. Sears reported that her home was burglarized. She told police that she left her house at 6:50 a.m. to take her children to school, according to an incident report. At about 8:35 a.m., Ms. Sears said she returned home after her son, Michael Bowers, called her because the front door was open.
When police arrived to the scene, they noted in a report that the house had been ransacked, but found no signs of forced entry. Police did not provide a list of missing items.
Capt. Morris said Saturday that he could not further discuss details of the case, including a possible motive for the homicide.
Its not prudent for us to discuss details surrounding these developments, he said. You will learn exactly what happened and why at the appropriate time. Today is not the appropriate time.
Capt. Morris said he doesnt expect any more arrests to be made.
Having said that, this is an ongoing investigation, and we never say never, he said.
Ms. Sears and Mr. Bowers are being held at the Columbia County Detention Center without bond.
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