Lisa Tarr, 33, of St. Petersburg, Fla., a former nurse, pleaded guilty in federal court in Boston to diverting opioids from two Boston-area hospitals. In August 2018, Tarr was a student nurse working at a Boston-area hospital. Tarr admitted to investigators at the hospital that she had stolen and self-injected fentanyl, a Schedule II controlled substance, from the hospital. In 2020, while working for another Boston-area hospital, Tarr stole an infusion bag containing fentanyl that was being used to treat a patient. On another occasion in 2020, while still working at the second hospital, Tarr stole multiple syringes of hydromorphone, a Schedule II controlled substance, from a locked drug cabinet.