A near-drowning had left the woman in a persistent vegetative state for nearly a decade. Awake but immobile, and apparently unaware, her universe consisted mostly of a room at a Phoenix Hacienda HealthCare facility where she received round-the-clock care.

And so a few days after Christmas, her caretakers were flummoxed when she went into labor.

“From what I’ve been told, she was moaning,” an unidentified source told Phoenix CBS affiliate KPHO. “And they didn’t know what was wrong with her. None of the staff were aware that she was pregnant until she was pretty much giving birth.”

On Dec. 29, with help from one of the facility’s nurses, the patient gave birth to a healthy baby boy, KPHO reported. The reported birth — and the sexual assault on a vulnerable individual that must have preceded it — has cast a harsh glare on conditions at a nonprofit organization that bills itself as a leading provider of health care for Phoenix’s medically fragile.

A Phoenix police spokesman told The Washington Post that the department is investigating, but did not release details about the case. A police report and 911 calls were also not available on Saturday. Hacienda HealthCare, which has 40 programs that serve more than 2,500 people a year in Arizona, according to its website, did not respond to calls and messages seeking comment.

But amid the firestorm that has engulfed it in the first week of the new year, the organization has released two statements, vowing to determine what happened.

“As an organization, Hacienda HealthCare stands fully committed to getting to the truth of what, for us, represents an unprecedented matter,” David Leibowitz, spokesman for Hacienda HealthCare, said in a statement released to ABC News.

Another statement said Hacienda is “already conducting a comprehensive internal review of our processes, protocols, and people to ensure that every single Hacienda resident is as safe and well cared for as possible. Anything less than that is unacceptable to our team, our company’s leaders and the communities we serve.”

No one has been arrested in connection with the incident, and it’s unclear if police have identified any suspects. In Arizona, sexually assaulting a vulnerable adult is a felony.

Gov. Doug Ducey’s office released a statement saying the reports are “deeply troubling.”

In addition to working with police, the state is “re-evaluating the state’s contract and regulatory authority as it relates to this facility and have been working closely with state agencies to ensure all necessary safety measures are in place,” Patrick Ptak, a governor’s office spokesman, said in a statement.

The state department of economic security dispatched a team to conduct health and safety checks at the facility, and the department of health services has beefed up safety measures: more staff, increased monitoring and stronger security.

Hacienda HealthCare was founded five decades ago. Then, it was called Hacienda de los Angeles, or “the dwelling of the angels.” Hacienda HealthCare over time became the umbrella for several programs in the Phoenix area that treat chronically ill infants, children and adults.

But there have been reports of patient mistreatment. For example, an investigation in 2013 found that a staff member had made “inappropriate, sexual statements” about four clients. The staff member remarked that one client with intellectual disabilities had been placed in a sexual position. The worker had also been observed watching clients touch themselves. Troublingly, the alleged incidents weren’t reported to the facility’s administrators until a month after they occurred.

That staff member was ultimately terminated, but the state found that the facility “failed to ensure clients … were treated with dignity.”