The Yokohama District Court on Tuesday sentenced a former nurse to life in prison for killing three patients by putting a disinfectant into their intravenous drips at a Yokohama hospital in 2016.

The court handed down the ruling on Ayumi Kuboki, 34, who admitted during the high-profile trial to murdering the patients by mixing an antiseptic solution into their drip bags at the hospital where she worked. Prosecutors had demanded the death penalty.

Presiding Judge Kazunori Karei said Kuboki, who admitted to the murders, can be held responsible for the crimes as pointed out by the prosecutors during the trial, saying, "She committed such acts knowing they were unlawful."