KANSAS CITY, Mo. -- Evidence from search warrants released Monday detailed new allegations about what happened on the Mohler family's Bates City-area farm.

Investigators dug for evidence for three days last week on the farm where Burrell Mohler Sr. and his sons lived back in the 1980s and into the mid '90s. According to a sworn affidavit, investigators said a sixth victim has come forward after hearing the news of the allegations against the Mohlers.

The woman claims the Mohlers locked her in the basement and raped her back in 1988. She said she became pregnant twice and, "Following the delivery of the first baby, Burrell E. Mohler Sr. and Burrell E. Mohler Jr. buried the infant in the basement."

The affidavit said the basement floor was dirt when the baby was buried, but was paved shortly thereafter. The witness said the baby was buried in a box underneath the only window in the basement. A searcher using radar located an anomaly "consistent with the shape of a box" buried approximately 12 inches below the concrete.

There is no word on who this person is or her relationship to the Mohlers. The other five victims have said that they knew about the woman, but had no idea who she was.

As the Lafayette County prosecutor looks over new evidence, she went ahead and filed new charges against Burrell Mohler Sr. and his four sons. The Mohlers are already facing charges for allegedly raping two children. The new charges identify a third victim.

The prosecutor indicated that she expects additional charges to be file in the case. Investigators continue to process evidence retrieved from the Bates City farm.