Lori Jones is charged with one count of murder and two counts of arson.
The first suspect, Nettie Lewis, 23, is behind bars and also faces murder and arson charges.
Lewis made her initial appearance Monday, where her bond was set at $1,050,000 on murder and arson charges in the death of an unidentified female victim.
According to Columbia Police Chief Mike Cooper, the autopsy of the victim has not yet been completed, and the State Crime Lab is still in the process of completing reports as a part of the investigation.
Cooper said the body of a woman was discovered after firefighters extinguished a fire at 701 D Street in Columbia Saturday around 11 a.m.
Fire officials stated when they arrived on scene, shortly after clearing the scene of another fire in the 1200 block of Loftin Street, the brick house was engulfed in flames.
"The time that firefighters were on scene battling the fire, an officer was at the local hospital taking a report and he received information about a possible body in a home on D Street," said Cooper.
"We have not ruled out that the other fire is not also connected to the crime on D Street," said Cooper.
Lewis, who was at the hospital to be treated for minor injuries to her hands, was questioned by investigators, and taken into custody after she received medical attention.
"When firefighters got the scene under control, and they were able to enter the home, they discovered a body inside the residence, which matched things that Lewis stated," said Cooper. "Other evidence in the case has been collected at other locations, but we are still piecing together the puzzle at this time."
The investigation has been a combined effort between the Columbia Police Department and the Marion County Sheriff's Department.
Cooper added the investigation is still ongoing at this time.
The cause and manner of death is not being released at this time, pending results from the State Crime Lab.
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