BERN, July 21 (JTA) — A new compact disc calling for the murder of Jews is in circulation in the skinhead communities of Germany, Austria and Switzerland. One of the songs on the disc is titled, “Put a Knife in a Jews’ Body.” “I take this public call to kill Jews very serious,” Ignatz Bubis, head of Germany’s Central Council of Jews, said in an interview Sunday. German prosecutors launched an investigation of extreme rightists who they suspect distributed the disc. Anti-Jewish material is banned in Germany. The head of the Swiss police in Bern warned recently that skinheads may launch an attack during next month’s ceremony in Basel marking the 100th anniversary of the first Zionist Congress. The Swiss army is being mobilized to help local police provide security for the event.