The grave of a high-ranking Nazi official has been mysteriously dug up in Berlin, police in Germany have said.

Detectives are investigating who may have prised open the unmarked grave of Reinhard Heydrich, an SS officer who was one of the architects of the Holocaust.

A worker at Invalids’ Cemetery discovered on Thursday morning that the grave had been disturbed, police told German media.

No bones had been removed.

Heydrich, dubbed “the man with the iron heart” by Adolf Hitler, chaired the 1942 Wannsee Conference where the Nazis planned the “final solution” genocide of all Jews in German-occupied Europe.

How the Nazis escaped justice Show all 4 1 /4 How the Nazis escaped justice How the Nazis escaped justice holocaust2-ap.jpg Nazi guards at Belzec death camp in occupied Poland in 1942 AP How the Nazis escaped justice holocaust-south-america.jpg Clockwise from top left: Josep Mengele (Brazil); Klaus Barbie (Bolivia); Walther Rauff (Chile); Adolf Eichmann (Argentina) How the Nazis escaped justice holocaust1.jpg Former concentration camp prisoners attend a ceremony at the memorial site of the former Nazi concentration camp Auschwitz-Birkenau in Oswiecim, Poland, on Holocaust Day AFP How the Nazis escaped justice holocaust3-epa.jpg Prisoners in Auschwitz-Birkenau, the Nazi German Concentration and Extermination Camp (1940-1945) EPA

Heydrich was killed later that year by Czech and Slovak resistance fighters in Prague.

He was buried with great fanfare in Berlin at the time but after the war the grave’s markings were removed to prevent it becoming a rallying point for neo-Nazis.

The grave of Reinhard Heydrich in Invalids' Cemetery, Berlin (AFP via Getty Images)

Police could not be reached for comment on Monday but told German media outlets there were not yet any suspects.

Those responsible could be charged with grave defilement if traced.