A former nurse of German descent on Tuesday confessed to murdering 100 of his patients.
Niels Hoegel admitted to killing his patients, aged between 34 and 96, at two hospitals in Delmenhorst and Oldenburg in northern Germany between 2000 and 2005.
The former nurse is already serving a life sentence for six convictions, including resuscitation. He is accused of giving various non-prescribed drugs to his patients in an attempt to show off his skills to his colleagues, CNN reported.
Hoegel admitted the murder allegations against him during the first day of his trial at a court in Oldenburg. Earlier this year, he was charged with another 97 murders.
In previous hearings, the 41-year-old former nurse said that he was on cloud nine when he successfully brought back a patient to life and was shattered when he failed.
Prosecutors earlier stated that Hoegel should have known that the drugs given to patients at the hospitals could cause life-threatening heart problems.
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