British nurse Lucy Letby, a notorious child serial killer, has been sentenced to life in prison without the possibility of parole.

Judge Mr. Justice Gross told Letby that she "will spend the rest of her life in prison," according to the Independent.

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Letby, a 33-year-old neonatal nurse, was found guilty of seven murders and six attempted murders at the Countess of Chester Hospital between 2015 and 2016.

Letby was arrested in 2018, 2019, and finally in 2020 in connection to an investigation into the spike of neonatal deaths at the facility.

Authorities found several of Letby's handwritten notes confessing to the crimes saying, "I don’t deserve to live. I killed them on purpose because I’m not good enough to care for them" and "I am evil I did this."

The murders were conducted via insulin poisoning, overfeeding, and pumping excess air into the infants' systems, which prosecutors said was an effort to disguise the deaths as naturally occurring.

Letby refused to attend both the verdict and the sentencing, sparking outrage for her unwillingness to face the families of the victims.

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A whole-life order, or life in prison, in the U.K. justice system is the most severe punishment available, with a total of 70 criminals currently serving the strictest sentence.

The U.K. government opened an independent investigation into the National Health Service on Friday to examine how hospital staff and regulators did not take notice of the violent incidences more quickly.