Another senior member of the Hacienda Healthcare board has handed in their resignation, bringing the staff exodus up to 10 in the wake of a vegetative patient being raped at the facility last year. On Friday, the facility's director of specialized therapy, Kerri Masengale, walked away from his post citing a 'lack of trust'. Masengale's resignation follows on the heels of Thursday's announcement that Tom Pomeroy, who acted as the Hacienda board chairman for nearly four decades, would be stepping down from his post. 'Though I had hoped to remain with Hacienda Healthcare during this unfortunate time of restructure,' Masengale's letter read. 'Due to previous personal experience (and subsequent lack of trust) with the newly appointed acting CEO, Perry Petrilli; my final day of employment shall be Friday, March 15, 2019,' he continued. Another senior member of the Hacienda healthcare facility board has handed in their resignation, bring the staff exodus up to 10 this week Hacienda hired Indiana-based Benchmark Human Services to oversee operations at the nursing facility after Arizona regulators ordered the site be placed under independent management. Phoenix police officers are pictured visiting residents in 2014 Masengale's specific grievance with Petrilli hasn't yet been revealed, but his termination of post came moments after the acting CEO was appointed. Nine other of Masengale's colleagues have either resigned or have been terminated this week, according to ABC 15. Those resigning will also leave the company on March 15. Among them, includes CEO Patrick White; Director of Patient Care Services, McKenzie Gillies; CFO Joe O'Malley; and Director of Nursing, Valerie Brehm. Attorney Rick Romley, who the facility hired to internally investigate how the patient was sexually assaulted, also quit on Friday. 'When I started this assignment, I made it very clear if I was not able to conduct my work with complete objectivity and if any issue came up that caused me any concerns, I would terminate my contract,' Romley said. Kerri Masengale (left) handed in his resignation on Friday. He cited a 'lack of trust' in acting CEO Joe Petrilli (right), who's appointment was also announced on Friday The board at Hacienda are said to be undergoing a massive overhaul (pictured: Nursing students listen during an Arizona nursing board special meeting Friday, Jan. 25, 2019) Maricopa County Attorney Rick Romley (above) says he quit his internal investigation of Hacienda because of concerns about its leadership and objectivity The attorney also added that he believes resigning employees would be open to returning to the facility if an entirely new board was constructed. Hacienda haven't yet said whether another investigator will brought in to finish Romley's work. Last month, Hacienda announced it would be closing its intermediate care facility - where the woman was raped - while continuing to operate its skilled nursing unit. The facility will continue to be run by a third-party manager while Hacienda identify a way to move 37 patients to other care centers. 'To date, no patient's care or safety has been compromised by any of these changes,' the board said in a statement. Authorities have charged Nathan Sutherland, a former licensed nurse, with sexually assaulting the 29-year-old victim On February 5, the 36-year-old nurse who police say is responsible for the rape, pleaded not guilty in an Arizona court. Nathan Sutherland was arrested in January after DNA evidence linked him to the victim's child. The defendant, a licensed practical nurse who began working at the facility in 2012, was charged with one count each of sexual assault and abuse of a vulnerable adult. Police started investigating after the 29-year-old woman, who they say was not in a position to give consent, unexpectedly gave birth on December 29. The shock delivery prompted authorities to test the DNA of all the men who worked at the care facility. Sutherland, a devout Christian and father-of-four, was forced to submit his DNA sample under court order. Sutherland is a 36-year-old self-proclaimed devout Christian who tours local churches in Phoenix with his sister (right) under the band name 'SLEEPLESSSOLJAZ' Sutherland pleaded not guilty earlier this month to charges of sexual assault and vulnerable adult abuse Defense attorney David Gregan described his client as a family man with young children who has lived in Arizona since 1993. 'There's no direct evidence that Mr Sutherland has committed these acts,' Gregan said. 'I know at this point there's DNA. But he will have a right to his own DNA expert.' Investigators believe Sutherland raped the patient sometime between February and April. He had worked at Hacienda for eight years and was directly responsible the woman's care. Sutherland will reappear in court on March 19. The 29-year-old victim has been in long-term care since she was three years old, having suffered a near-drowning. She gave birth at the facility as staff frantically called 911 for assistance, telling the operator that they hadn't known the 112-pound patient was pregnant. The victim's family have said they will take care of the boy. Since the scandal emerged, Hacienda say they've increased security measures within the facility, including the installation of dozens of security cameras and company-wide training measures. All rights reserved for this news site dailymail and under his responsibility