Authorities examine more than 120 additional cases linked to convicted ex-nurse

Background of the case

"Doch der Mann könnte noch für weitaus mehr Todesfälle verantwortlich sein," prosecutors said, indicating that the total number of deaths attributable to him could rise significantly as the inquiries progress. Investigators are reviewing patient files, death certificates and witness statements, the statement added.

Exhumations of bodies are among the measures being considered in cases where cause of death is unclear, according to reporting from the Deutsche Presse-Agentur. Forensic pathologists would be tasked with determining whether the patients were killed rather than died of natural causes.

Legal framework for reopening investigations

The legal framework in Germany allows prosecutors to reopen investigations when new evidence suggests a convicted defendant may be responsible for additional crimes. Each new case must be assessed individually to determine whether sufficient evidence exists for a fresh charge.

Healthcare regulators have faced questions about why warning signs were not acted upon earlier. Several of the facilities where the man worked have since replaced staff and tightened protocols for the administration of medication, according to local reports.

Defence lawyers are expected to be notified as new evidence emerges, in line with German criminal procedure. Any additional charges would be tried separately from the original proceedings that ended with the life sentence.

Reactions and next steps

The case is one of the largest serial-killing investigations in post-war Germany involving a healthcare professional. Comparable cases in recent decades have prompted reforms to oversight in hospitals and care homes.

Reporting on the new investigations has been carried out by the Deutsche Presse-Agentur and the dpa-Newskanal, with further coverage by other German outlets. The exact timeline for completing the 120-plus reviews has not been announced.

Families of deceased patients have been advised to contact prosecutors if they believe a death may be linked to the man. A dedicated contact point has been set up at the Aachen public prosecutor's office.