Poland on Monday held a state burial of the remains of over 700 victims of Nazi Germany’s World War II mass executions that were recently uncovered in the ‘Valley of Death’ in the country’s north.

The observances in the town of Chojnice began with a funeral Mass at the basilica, leading to an interment with military honours at a local cemetery of the victims. President Andrzej Duda, authorities and officials of the state National Remembrance Institute, which carried out and documented the exhumations, took part in the events.