PHOENIX — A licensed practical nurse has been arrested on a charge of sexually assaulting an incapacitated woman who gave birth last month at a long-term health care facility, Phoenix police said Wednesday. Investigators arrested 36-year-old Nathan Sutherland, a licensed practical nurse, on suspicion of one count of sexual assault and one count of vulnerable adult abuse, Phoenix Police Chief Jeri Williams said. Sutherland was one of the woman’s caregivers at the Hacienda HealthCare facility and he was charged after authorities obtained a court order to take a DNA sample from him, which was compared to DNA of the baby boy, said police spokesman Tommy Thompson. Sutherland declined to speak with police, Thompson said. The 29-year-old victim has been incapacitated since the age of 3 and gave birth at the facility on Dec.