MOSCOW (AP) _ Denying recent media reports, Russia's Foreign Intelligence Service declared Wednesday that U.S. atom bomb pioneer Robert Oppenheimer never provided any information to the Soviet Union.

Spokeswoman Tatyana Samolis was commenting on Russian news reports alleging that the American scientist passed along secrets about early U.S. nuclear weapons production.

Other reports have mentioned Danish scientist Niels Bohr as another source of information for the Soviets, the Interfax news agency said.

``Such reports about Oppenheimer and Niels Bohr regularly appear in the press but are absolutely untrue,'' Samolis said. ``Those people never provided information to the Soviet foreign intelligence service _ absolutely never.''

From 1943 to 1945, Oppenheimer headed the Los Alamos laboratory in New Mexico, where the United States designed and built the first atomic bomb. Bohr, who fled Europe to escape the Nazis, advised U.S. scientists at Los Alamos.

Soviet intelligence used information obtained in the West to advance Moscow's own nuclear weapons program.