Former German nurse Niels Högel has admitted to performing deadly experiments on his patients in order to resuscitate them.
According to reports, he injected patients with a variety of drugs designed to stop the heart. Högel has induced cardiac arrest so many times that he can’t even remember basic details about the people he killed.
As part of the investigation, authorities exhumed bodies in order to test them for the drugs he used.
On Thursday, Oldenburg Judge Sebastian Bührmann sentenced Högel to life in prison for the murder of 85 people.
Authorities suspect he has killed as many as 100.
“I feel like an accountant of death,” said Bührmann. “The human mind struggles to take in the sheer scale of these crimes.”
Högel is already serving a life sentence for killing two patients, but the new ruling means it is less likely he will be realized on parole after 15 years (as is common in Germany).