More charges have been laid against an Adelaide mother and her partner accused of "willingly" exploiting her five-year-old daughter by enticing her to engage in sexual acts.
The Adelaide Magistrates Court heard the couple played games with the young girl which would "entice her to the bedroom", where they would "engage in various sexual activities with her".
They referred to her as their "little toy", the court heard.
The couple, who cannot be identified for legal reasons, has now been charged with maintaining an unlawful sexual relationship with a child, along with various charges of producing and disseminating child exploitation material.
Australian Federal Police and SA Police detectives laid the fresh charges against them on Monday night.
The prosecutor said the allegations against the couple were "the highest level of seriousness" and were carried out "with the intention to make [the girl] amenable to sexual activity".
She said the girl's mother also sent her partner naked photographs of her daughter on two occasions for his "sexual gratification".
"We have here, it's alleged, a mother who has willingly put her young child in harm's way, has participated in her exploitation, along with her then-boyfriend, who had an expressed sexual investment in children," she told the court.
"The charges are extremely serious and there is a very strong prosecution case with respect to all charges.
"If these matters are to resolve, there's no question that the accused would have to serve terms of imprisonment for them."
The prosecutor told the court the man had admitted to an undercover police officer that he had touched the girl on her genitals and engaged in sexual games with her.
Man plans to defend charges
The accused's lawyer, Allon Reeves, said his client indicated he would defend the charges.
"When he was arrested last night, [police] searched his home, seized his phone and found no materials," he told the court.
"He said to them that these are false charges and indicated that he would be defending them."
The court also heard the girl's mother had no prior criminal history.
Chief Magistrate Mary-Louise Hribal rejected the couple's application for bail on the grounds of the strong prosecution case, the risk of reoffending and for the protection of the alleged victim.
The case will return to court later this month.
