The incident also prompted Hacienda HealthCare CEO Bill Timmons to resign yesterday, after the incident put a spotlight on the safety of long-term care settings for patients who are severely disabled or incapacitated.
The source added the patient required around-the-clock care and many would have access to her room.
A woman whose 22-year-old daughter is a patient at the facility said she refuses to leave her side until the investigation is conclusive.
A female patient living at a Hacienda HealthCare facility reportedly gave birth December 29 although the staff was unaware the woman was pregnant.
Gary Orman, the executive vice president of the company's board, said it would "accept nothing less than a full accounting of this absolutely horrifying situation".
Police have served a search warrant to collect DNA from male employees at a Phoenix healthcare facility where a woman gave birth while in a vegetative state.
Timothy Weah joins Scottish premier league side Celtic
The 18-year-old forward, whose dad won the Ballon d'Or in 1995, netted twice in six first-team appearances for Ligue 1 side PSG . PSG allowed the 18-year-old Weah to leave on the day he signed a contract extension with the French team until June 2021.
She had been left in a vegetative state (awake but with no signs of awareness) for over 10 years after nearly drowning.
Karina Cesena says that her trust with Arizona's Hacienda Healthcare has "definitely been broken". "I haven't been able to sleep good at night because of what occurred here", Angela Gomez, a Hacienda patient's mother, said.
A Phoenix police spokesman said that "the matter is now under investigation" but declined to give any further details of the case.
Orman continued: "And we will do everything in our power to ensure the safety of every single one of our patients and our employees".
Cesana is working to move her daughter out of the facility, which serves infants, children and young adults who are "medically fragile" or have developmental disabilities.
Since the news of the incident broke, parents of patients at the Phoenix-based health care facility have come forward, expressing their concerns.
Alejandro Benally, Chief of the San Carlos Apache Police Department said, "At this point, this matter falls under the jurisdiction of the Phoenix Police Department".
One staff member was sacked for making repeated inappropriate sexual comments to patients.
In 2013, Timmons received a warning from the Arizona Department of Health Services after an investigation revealed a staff member - who was later fired - made sexual comments about a patient that weren't appropriately reported.