Police are in “serious discussions” about the possibility of sending cadaver dogs to the home where 13 children were held prisoner by their parents.
Police are reportedly concerned about the possibility of there being other deceased children on the property, according to investigative news program Crime Watch Daily.
Riverside County Sheriff’s Homicide Detectives are also considering performing DNA tests to identify whether the children are related to each other by blood.
The Sheriff’s Department has refused to confirm these claims.
California couple David Turpin, 56, and Louise Turpin, 49, were charged with multiple counts of torture, child abuse, dependent adult abuse and false imprisonment on Thursday.
David Turpin was also charged with performing a lewd act on a child under age 14.
The parents were jailed on $12 (A$15) million bail each after pleading not guilty at their first court appearance. If convicted, they could be sentenced to life in prison.
It is alleged the pair tortured a dozen of their children for years, starving them to the point that their growth was stunted.
Police said the couple chained their children to their beds for up to months, preventing them from using the toilet at times and forbidding them from showering more than once a year.
The litany of physical and emotional abuse was enough to invoke a house of horrors that apparently went unnoticed for years in California and Texas until Sunday last week, when a 17-year-old girl managed to escape and call 911.
The girl and her siblings had plotted the escape for two years, District Attorney Mike Hestrin said. Another girl who escaped out a window with the teen turned back out of fear.
When deputies arrived at the four-bedroom, three-bathroom house on a dead-end street in Perris, about 97 kilometres southeast of Los Angeles, they were shocked by what they found.
Malnutrition was so severe that it was consistent with muscle wasting and had led to cognitive impairment and nerve damage, Mr Hestrin said. The oldest child, a 29-year-old woman, weighed 37 kilos. A 12-year-old was the weight of a typical seven-year-old.
Some of the 13 children had been isolated so long they did not know what a police officer was.
The victims range in age from two to 29. The torture and false imprisonment charges do not include the two-year-old, who was not malnourished.
All the children’s names begin with the letter J, according to court documents that didn’t provide their full names.