Authorities said Grooms was shot and killed in Wallace on January 21.
Sheriff's deputies and emergency crews responded to a residence at around 3:45 a.m., in reference to a shooting.
A short time later, the MCSO said it was notified that another shooting victim, identified as Allen, was at Chesterfield General Hospital with a gunshot wound.
Investigators said several pieces of evidence were collected from various locations that will be analyzed by SLED as well as interviewed witnesses. Investigators said other evidence includes phone records.
According to the Marlboro County Sheriff's Office, the investigation shows that Allen came to the residence, which is that of the Grooms' child's mother around 3 a.m. Apparently, Allen had a key from living there prior, deputies said.
Authorities conclude the men had a confrontation and several shots were fired.
Groom's child and the child's mother were present during the shooting; neither were hurt, officials said.
On Thursday, Chesterfield County Sheriff's investigators provided new information to the Marlboro County Sheriff's Office, which led to the arrest of Williams, who eventually cooperated with investigators.
According to a news release from MCSO, Williams took Allen to the home where the shooting occurred. After the shooting, Williams drove Allen to Cheraw to hide two guns, and then took him to the hospital. Those guns have since been recovered, as well as additional evidence from Grooms' autopsy.
Pruitt was charged based on her actions during the shooting inside the home, and her failure to properly protect the child by leaving when she had the opportunity, according to MCSO officials. Additional evidence was recovered at her residence.
DSS has also been involved in this situation for several months and have been in communication with the MCSO about the child's safety, according to officials.
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