According to the state attorney general, a nurse from Pennsylvania, Heather Irene Pressdee, has been accused of administering lethal doses of insulin to two patients and causing harm to another patient.

Pressdee, a 40-year-old nurse from Natrona Heights, allegedly administered these “overdoses of insulin” while employed at Quality Life Services in Chicora, Pennsylvania, as reported by NBC News.

The details of the charges were disclosed in a news release by Pennsylvania Attorney General Michelle A. Henry on Friday.

According to a criminal complaint, Pressdee worked at Quality Life Services for less than a year, from May 23 to November 28, 2022.

One patient, a 55-year-old individual, passed away on December 4, after Pressdee’s employment had already been terminated. Another patient, an 83-year-old man, died on December 25.

A third patient, a 73-year-old man, received an overdose of insulin on August 31 but survived after receiving emergency medical care, according to officials.

Pressdee was arrested at her residence on Wednesday and is facing charges including homicide, attempted murder, aggravated assault, and reckless endangerment, as stated by Attorney General Henry. She was arraigned on the same night and is currently being held without bail at Butler County Prison.

“The allegations in this case outline the callous abuse of incredibly vulnerable patients by a professional nurse,” Henry wrote in her statement. “As the charges indicate, these were deliberate and intentional acts perpetrated by a caregiver who was trusted to care for these victims.

As per the criminal complaint, Pressdee reportedly informed authorities that one of the victims had explicitly requested her to “end his life,” while asserting that the quality of life for the other two patients was significantly compromised.

Furthermore, the complaint stated that Pressdee exhibited a pattern of “disciplinary actions for abusive conduct towards patients and/or staff” at previous institutions where she had either resigned or been terminated.