A US federal court has denied a petition aimed at halting the construction of a memorial at the Belzec death camp in Poland. The motion was filed by Rabbi Avi Weiss, president of the New York-based "Amcha -The Coalition for Jewish Concerns", to stop the American Jewish Committee from funding construction of a trench that runs through the camp. Weiss said the trench disturbed Jewish remains at the site. The decision by the US District Court denying Weiss’ motion comes late since the memorial already has been built and was opened in June. It commemorates the estimated 600,000 Jews who were murdered there between 1942 and 1943 in the most brutal Nazi killing camp apart from Auschwitz.