Police want to bring in cadaver dogs to search the Turpin house to look for possible remains of more children.
The gruesome new twist in the house of horrors case comes as DNA testing may be called for to confirm the Turpin children are all related.
The 13 kids are continuing to recover in hospital while adapting to normal life.
As the investigation grows Riverside County Sheriff's Homicide Detectives want to see if there were other children who might not have survived.
While there are also reports that detectives may want to order DNA testing on the 13 Turpin siblings, seven adults and six children to confirm that they are related.
Since arresting the Turpins earlier this week, authorities said they have learned the children were confined to the house, chained to furniture, starved and often deprived the use of a toilet. Some of the children were so detached they didn't understand the concept of a police officer or medicine.
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Cadaver dogs could be brought in to search the premises for other siblings of the 13 Turpin children.
As the probe continues the 13 siblings are facing up to learning about how society works after they were hidden away for so long.
Some of the children were so detached from normal society that they did not understand the concept of a police officer or medicine.
The couple's lawyer stated that hey seemed like a 'normal couple' before their arrest.
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