(KRON) Authorities say the body found on the rural South Carolina property where a woman was found chained in a storage container is her boyfriend.

Spartanburg County Sheriff Chuck Wright identified the body late Saturday as 32-year-old Charles Carver. He was found and exhumed from a shallow grave Friday.

Coroner Rusty Clevenger says Carver died of multiple gunshot wounds in the upper part of his body. He says he’s working with an anthropologist to estimate how long he’d been buried.

Carver and his girlfriend Kala Brown went missing around Aug. 31. Todd Kohlhepp is charged with kidnapping her and keeping her chained in a locked storage container.

According to sheriff deputies, the man responsible for this act has killed at least seven people.