First German investigation Wiesbaden police reportedly concluded within three hours that Duggan committed
suicide. The accident investigator noted marks on Duggan's clothes consistent with having been in contact with the underside of a vehicle. Under German law, Arlett said that he could investigate further only if there existed "concrete evidence of third-party involvement," and there was none; the Schiller Institute had been mentioned in connection with the death only because Duggan had attended an event of theirs. Officials maintained the same position in 2007 and 2009.
First British inquest Duggan's body was flown back to England on 31 March 2003, where a non-forensic post-mortem examination was conducted on 4 April by
pathologist David Shove. Shove found head injuries, bruising on the backs of the arms and hands, blood in the
lungs and
stomach, A blood sample showed no
drugs or
alcohol.
Private forensic reviews Erica Duggan set up the "Justice for Jeremiah" campaign in April 2004 with legal support from the
British Foreign Office. In 2005 she hand-delivered a list of questions to Shove, the pathologist who had performed the autopsy. A
forensic pathologist suggested that bruises on Duggan's hands and arms were defensive injuries. Two other forensic experts expressed similar views. After protracted legal action by Erica, the High Court ordered the new inquest in May 2010. The inquest took place over three days in May 2015 at
North London Coroner's Court before the coroner
Andrew Walker. Walker rejected the view that the accident had been staged, calling it implausible. The court heard from
Catherine Picard, a French expert on
cults, that Duggan might have experienced "intense pressure and psychological violence" at the conference, including one-on-one sessions, hours of lectures, and "being subjected to repeated conspiracy theories and antisemitic discourse." Matthew Feldman, a historian at
Teesside University and expert on the
far right, testified that, if other participants had learned that Duggan was Jewish, British and had attended the Tavistock Clinic, "it would have been taken very seriously by the movement." He added that Duggan's attendance at the conference, the methods used to recruit young people, Duggan having expressed that he was a Jew and British, and questioning what he was being told "may have had a bearing on Mr. Duggan's death in the sense that it may have put him at risk from members of the organization and caused Mr. Duggan to become distressed and seek to leave."
Second German investigation in Frankfurt Duggan's family appealed unsuccessfully in 2006 to the
Higher Regional Court (
Oberlandesgericht) in Frankfurt regarding the decision to close the German police investigation. Their appeal against that decision was rejected by Germany's Federal Constitutional Court in 2010. A second appeal to the
Oberlandesgericht succeeded in 2012. In what the
Berliner Zeitung described as an extremely unusual decision, the court ordered the Wiesbaden prosecutor to re-open the inquiry. The court said that a pedestrian leaving the LaRouche offices in Wiesbaden, in the direction of the town centre, would have reached exactly that junction in the Berliner Straße, and "would have had to cross the four-lane road if he did not want or was unable to turn back." The new investigation opened in April 2013. Erica criticised the appointment of the same police officer who had presided over the case in 2003, accusing the German authorities of "institutional racism" akin to that of the
Stephen Lawrence murder inquiry. In 2014 the
Board of Deputies of British Jews asked
Chancellor Angela Merkel to arrange an independent investigation, and in 2015 asked the
British Foreign Secretary to raise the issue with the German government. ==LaRouche response==