LONDON (AP) — A neonatal nurse in a British hospital was found guilty Friday of murdering seven babies and trying to kill six others during a yearlong campaign of deception that saw her prey on the vulnerabilities of sick newborns and their anxious parents.

Following 22 days of deliberation, the jury at Manchester Crown Court convicted 33-year-old Lucy Letby of killing the babies, including two triplet boys, in the neonatal unit at the Countess of Chester Hospital in northwest England between June 2015 and June 2016. She will be sentenced on Monday.