De Berk was allowed to remain free while awaiting a retrial at the Court of Arnhem, which first adjourned while further investigations were made. The public prosecution had asked for extensive new forensic investigations, but this request was turned down by the court. Instead it commissioned further independent medical investigations into the cases of two more of the children, again allowing a multidisciplinary medical team access to all possible medical data concerning the children. At a session on 9 December 2009, the court stated that new integral medical investigations of the last nine months had confirmed that the cases of Amber, Achmed and Achraf were all natural deaths/incidents. These were the only cases where there was previously claimed proof of de Berk's culpability.