German prosecutors are investigating a 100-year-old man suspected of serving as a guard at a prisoner of war camp during the final years of the Second World War. Authorities allege he took part in executions at the Hemer camp in western Germany, where thousands of mostly Soviet inmates died between December 1943 and September 1944. Recent years have seen several trials of former camp staff, but the advancing age of suspects means time is running out for further prosecutions. Some accused individuals have died before facing trial, highlighting the urgency of these ongoing investigations.