A spokesman for Hacienda HealthCare says investigators served a search warrant Tuesday to obtain DNA samples from all male staffers.
The facility is now under criminal investigation after a woman went into labor in her bed and delivered a healthy baby boy on December 29, 2018 at the care facility for people with intellectual disabilities.
"As a company, we welcome this development in the ongoing police investigation", the company stated in the release, reported the Arizona Republic. "When you have a loved one committed to palliative care, when they are most vulnerable and dependent upon others, you trust their caretakers", Chairman Terry Rambler said in a statement.
On Monday, Hacienda's longtime CEO, Bill Timmons, resigned as police continue to investigate how a woman who wasn't able to consent to sex was impregnated.
The source added the patient required around-the-clock care and many would have access to her room.
But Cesena says neither she nor the other parents' families have been given any details about what those extra security procedures are. Then one day, hospital workers noticed one day that there was something wrong with her.
KPHO also spoke with a former Hacienda manager who said Timmons insisted that a 1988 incident of abuse of a different patient be covered up.
Police have declined to comment on the investigation.
The Phoenix Police Department and the Arizona Department of Health Services are conducting a joint investigation into the sexual assault. "None of the staff were aware that she was pregnant until she was pretty much giving birth".
One of them includes not allowing male employees in rooms without a female supervisor.
She said: "The poor guy was just laying (sic) there".
Hacienda said it in a statement it was cooperating with law enforcement and reviewing its security protocols after becoming aware of a "deeply disturbing incident and "an unprecedented matter".
A Hacienda board member says the facility "will accept nothing less than a full accounting of this absolutely horrifying situation".
"I can't believe that somebody would bathe her daily for nine months and never know that she wasn't having a period, that she [was] growing in her midsection, that nurses weren't keeping track" of her weight, the person said.
Founded as Hacienda de Los Angeles in 1967, Hacienda HealthCare describes itself on its website as "the leading provider of specialized medical care and social services for Arizona's infants, children and young adults who are medically fragile or chronically ill, including those with developmental disabilities".