Detective cries speaking for the first time about finding Kala Brown "chained like a dog".

Detectives have spoken for the first time about finding Kala Brown chained by the neck in a metal storage container on a property in South Carolina.

Speaking to ABC News, the detectives who were critical in finding the 30-year-old were emotional upon her discovery.

“I was shocked and amazed,” Detective Bradley Whitfield said.

“I think we all saw a lot of things that day that are going to stay with us,” he told ABC News while crying.

“It could by anybody’s child, anybody’s wife or husband. I wish we could have done more.”

She thanked them when she was found. Image via Facebook.

Detective Charlynn Ezell recounted the first thing Brown said to them as she was saved.

"She just looked at me and said, 'Thank you so much for finding me'."

They have also added that the public have not been told the full extent of the crimes because of their horrific and "shocking" nature.

While locked up in the container for months, Brown claimed she watched as her kidnapper, Todd Kohlhepp, shot dead her boyfriend.

When talking to detectives, Brown said she suspected there were many more bodies buried on Kohlhepp's property, as police feared they could be dealing with a serial killer.

The body of Brown's boyfriend, David "Charlie" Carver was found before two more bodies identified as a husband and wife were also discovered buried on the 100-acre property.

The couple.

25-year-old Meagan Leigh McCraw Coxie and 29-year-old Johnny Joe Coxie were allegedly killed by gunshot wounds, with both of their deaths being investigated as homicides.

The search for more bodies has now gone interstate with police expanding their searches to Kohlhepp's other properties.

He has so far been charged with four counts of murder from 2003, but police expect more charges to be laid.