Bizarre new allegations are emerging from a sex abuse case that has already shocked Missouri with charges that six men subjected the family's children to assaults ranging from rape to bestiality.
Court documents released to ABCNews.com this week claim that at one point, several children belonging to Burrell Edward Mohler Jr. were forced to help kidnap a man, and were then given knives and ordered to kill him.
The children have also told investigators that they remembered a girl held captive in the family's Bates City, Mo., basement. Police state in the documents that a woman has come forward to say she was kept in the Mohlers' basement where she gave birth to two children.
Court papers allege that Mohler Jr. and his father, Burrell Edward Mohler Sr. buried the first of the infants in the basement's dirt floor and quickly covered the space with cement.
The newest accusations are in addition to charges that Mohler Sr. and Jr. along with four other adult male members of their family subjected six young children to years of abuse.
The grotesque nature of the allegations along with investigators' unwillingness to make hardly any of the physical evidence public has some questioning whether the charges could be true.
Some of the Mohler's relatives have described the suspects as God-fearing, hardworking folks.
"These fellas have all had respectable jobs, and for this to come up so many years later," Ron Gamble, a relative of the accused family members, said, according to the Associated Press. "In this country, you're innocent until proven guilty. Have they found any evidence? I haven't heard of any."
Police would not say if a search of the house and surrounding property had turned up any evidence of the infant in the basement or the box the child was reportedly buried. Police also have not indicated they found any evidence of the man the children claimed was killed, even though they told investigators they helped dig a grave for him.
So far, no one has been charged with murder.
The children, who are now adults, have previously said they recorded their abuse ordeals on paper stuffed in jars buried on the property, but there is no indication those jars have been found.
Nevertheless, authorities who searched the expansive, rural property where the Mohlers lived for decades say they are confident their evidence will stand up in court.
"If we weren't sure of our investigation, we wouldn't be putting forth this much effort," Missouri State Highway Patrol Corporal Bill Lowe told ABCNews.com. "In the scope of a trial, yes I believe we have good evidence."
Search warrant returns indicate that police took pieces of bone of undetermined origin, containers of soil, glass fragments and a broken glass jar, among other items.
Authorities also seized computer evidence and pornographic books and magazines, some of them promoting incest, from Mohler Sr.'s Independence, Mo., home, the Associated Press reported while citing court documents.
"Anything as far as evidentiary value cannot be discussed," Lowe said, but added that investigators have confidence in the validity victims' testimonies.
"If we didn't feel the charges were warranted, then they wouldn't have been applied for," he said.