(INSIDE EDITION) - The South Carolina kidnapping suspect who allegedly chained a woman in a storage container for two months has reportedly confessed to a 2003 quadruple murder and may have killed three others, according to police.
Officials arrested Todd Kohlhepp, 45, for kidnapping on Thursday after finding 30-year-old Kala Brown chained by the neck and ankle in a storage container on his property.
Police said Kohlhepp later confessed to the unsolved murder of four people in 2003 at a "Superbike Motorsports" and was subsequently charged with four counts of murder.
Spartanburg County Sheriff Chuck Wright said Kohlhepp told detectives details of the four murders that only the killer would have known.
Scott Ponder, 30, Beverly Guy, 52, Brian Lucas, 29, and Chris Sherbert, 26, were found fatally shot on November 6, 2003.
Wright said 'God answered our prayers' in solving the 13-year-old cold case.
Police also found an unidentified body on the almost 100-acre property on Friday, which they have now identified to be 32-year-old Charlie Carver's, Brown's boyfriend.
Brown reportedly told officials that she saw Kohlhepp shoot her boyfriend and the coroner said Carver was shot more than once in his upper extremities.
Police are not yet clear on how long the body was buried, according to reports, but they described his burial site as "gruesome."
"We talked with the family and they're obviously heartbroken," Wright said.
It is not clear when Kohlhepp will be charged in connection with the alleged Carver murder.
Wright said in a news conference that Kohlhepp also led investigators Saturday to where he said two more bodies are buried on his property, but the bodies have not been recovered yet.
Brown and Carver both went missing in August and police found Brown alive on Kohlhepp's property after acting on a tip.
According to police, Brown and Kohlhepp knew each other beforehand.
Kohlhepp is a registered sex offender who was convicted of raping a 14-year-old at gun point when he was 15.