The German government has been asked to open an investigation into the workings of the far-right LaRouche group.
Jeremiah Duggan was found dead on a highway in Wiesbaden, Germany, in 2003, while attending a LaRouche youth event.
The student’s parents have presented the German Embassy in London with a dossier detailing the group’s antisemitic links.
This week, Jon Benjamin, chief executive of the Board of Deputies, joined Erica and Hugo Duggan at a meeting at the embassy with Germany’s deputy ambassador, Dr Eckard Lubkemier.
He was also handed a petition with 1,365 signatures asking the German and British authorities for a full investigation into the tragedy.
Mr Benjamin said: “Jeremiah’s death seems to have been the frightening and tragic consequence of his contact with this shadowy organisation, which preaches hatred against Jews.”
The Duggans have long disputed the German coroner’s suicide verdict and believe Jeremiah became frightened after revealing his faith to the group.
The German constitutional court is currently deciding whether to open a full investigation into the causes of his death.