Pakistan, July 14 -- A German doctor, identified as Johannes M., has gone on trial in Berlin for allegedly murdering 15 patients by giving them fatal injections between 2021 and 2024. Prosecutors believe he may have also set fires in some cases to cover his tracks.

Johannes M., a 40-year-old palliative care specialist, is accused of killing 12 women and 3 men, aged between 25 and 94. Prosecutors claim he used sedatives and muscle relaxants to cause respiratory failure within minutes, without the patients' knowledge or consent.

The alarm was first raised by a coworker who noticed an unusual number of deaths involving fires. Investigations later linked Johannes M. to at least 15 suspicious deaths, with 96 more cases - including that of hi...