GERMANY- A nurse who is already serving a life sentence for murdering patients is accused of murdering 100 more. 

Niels Hoegel was given a life sentence after German authorities discovered he murdered two patients back in 2015, but now authorities have reason to believe he is behind at least 100 more. 

In the trial, the former nurse said he intentionally caused about 90 patients to suffer from cardiac crises because he enjoyed resuscitating them.

Police told ABC News that investigators just finished an toxicological report that confirmed Hoegel's involvement in deaths at both the Delmenhorst and Oldenburg hospital. Investigators found an additional  16 cases where he is the suspected. 

In late August, investigators said they thought he might have killed another 84 patients, not including the ones he was already serving time for.

Prosecutors say they expect to file more charges within the next year. The new charges could effect Hoegel's chances for parole. 

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