A woman pretended to be a fake autistic twin sister to sexually assault a caregiver in Pearland, Texas, police said Thursday.

Rachel Childs, 29, hired a caregiver online to look after her twin, who she claimed had autism. She then instructed the caregiver to pick up her made-up twin and take her home for the night. She also told the caregiver she wouldn’t be at home at a specific time and would return only after the twin is dropped off.

During the stay at the caregiver's home, she engaged in "sexually oriented conduct." Officials said the caregiver got suspicious as her behavior did not match with that of someone suffering from autism. She then checked Childs’ background and determined that she was the only child. The caregiver immediately called Pearland police to report Childs, CBS-affiliated television station KHOU reported.

Police said Childs was "perpetrating a hoax for sexual gratification and was actually pretending to be autistic,” Click 2 Houston reported.

Pearland Police Department took Childs into custody on Jan. 3 and is currently out on bond.

In a similar incident in September, an Arizona man faked Down syndrome and asked female caregivers to bathe him and change his diapers. Paul Anthony Menchaca, 30, posted an ad under the fake name “Amy,” and requested caregivers to attend to Amy’s son who had Down syndrome.

According to court documents, one of the caregivers said she gave him a bath and changed his diaper in 30 separate requests. She also recalled five separate incidents wherein he told her that his genitals were not cleaned properly.

0ne of the caregivers said, "He acted like a child. His demeanor was child-like, so he would have tantrums, he would act like a child. He would just be clapping, he would be smiling and talking to us when we were changing (him)."

The caregivers grew suspicious and followed him one day. They found him walking off to his home. Menchaca was then taken into custody.