A nurse charged with the murder of her two-year-old foster son allegedly beat him to death at her home in Utah after researching child injuries on the internet, explosive court documents have revealed.

Duchesne County deputies were dispatched to the home of Lisa Jo Vanderlinden in Neola on August 5 receiving reports of a deceased child. Upon arrival they found the toddler, identified as L.C., dead with multiple bruises and cuts on his face and body.

A medical examiner later determined the boy had died from internal injuries that were the result of blunt force trauma consistent with child abuse.

Vanderlinden, a 41-year-old licensed practical nurse who had previously fostered and adopted several other children, told police that the night before the boy was found dead she had been 'mad and frustrated' with him, according to court documents.

Lisa Jo Vanderlinden, a 41-year-old licensed practical nurse, has been charged with murder after she allegedly beat her two-year-old foster son, identified as L.C., to death at her home in Neola, Utah, in August. Investigators found she had conducted several internet searches related to child injury, specifically the same type of injuries the boy died from

Police say Vanderlinden removed the boy from the dinner table on the evening of August 4 and he later began vomiting, so the nurse bathed him and changed his diaper several times over the course of the night.

Court documents state that at one point that night a family member heard a 'loud bang' that came from the bathroom where Vanderlinden was caring for the toddler.

Following the noise, the boy wasn't acting normal and would not walk, the documents say.

Other children in Vanderlinden's care on the night of the accident told police that she had been angry and yelling.

Investigators later looked into the internet history on Vanderlinden's phone and found that she had conducted several searches related to child injury, specifically the same type of injuries that the boy died from.

Police determined the other people who were in the home at the time of the boy's death were not in any way responsible for the fatal injuries.

Vanderlinden and her husband took L.C. and his younger sister into their care in April of 2017. They lived at the home with the couple's natural children and other foster children

Vanderlinden and her husband took the boy and his younger sister into their care in April of 2017. They lived at the home with the couple's natural children and other foster children.

According to court documents, Vanderlinden found L.C. to be 'difficult and challenging, and while she wanted to keep and adopt the sister, she did not want to adopt him'.

Investigators described Vanderlinden as 'completely indifferent' to the boy's well-being and that she made no attempt to seek medical attention for him.

Friends and acquaintances described conversations with Vanderlinden which indicated that she'd become increasingly frustrated and angry toward the boy for 'numerous reasons'.

The court filings state that prior to this murder investigation there had been multiple unsubstantiated allegations of child abuse and neglect by Vanderlinden.

The boy's natural mother, with whom he had plans to see soon, had allegedly complained about bruises on his face during prior visits.

Vanderlinden has been charged with first-degree felony aggravated murder.

If convicted, she faces life in prison without parole.

Vanderlinden's natural children and foster children, including the deceased boy's sister, were removed from the home after the two-year-old's death.

Police say that when they were removed from the home, Vanderlinden said it was 'because of what I did'.