Barack Obama's planned trip to Germany in June is not going to be an official state visit. German diplomatic sources told SPIEGEL ONLINE that the US president is planning a private trip in which he will go on a personal search to places of importance for his family history.

On Tuesday, the news became public that a White House advance team is currently in the eastern German city of Dresden, where they are looking for possible accommodations for the president. In addition to a short visit to the city on the Elbe River, the president is also intending to visit the memorial at the former Nazi concentration camp Buchenwald.

Obama's great-uncle, Charlie Payne, served in the 89th Infantry Division during World War II and participated in the liberation of Ohrdruf, a forced labor camp that was a satellite camp of Buchenwald. It's possible Obama could visit on June 5, one day before his planned participation in the celebrations of the 65th anniversary of the landing of the American troops in Normandy.