In 1987, Klass first saw the Majestic 12 documents. These were a set of documents "discovered" by ufologist Bill Moore and his associate, television producer Jaime Shandera. The documents appeared to prove a government cover-up of an alien crash at Roswell, New Mexico, in 1947. Klass immediately doubted the authenticity of the documents and set about trying to prove his suspicions. Klass was able to raise numerous questions about each document, but after several months he realized that only the government was in a position to debunk them. In late 1987 Klass wrote to the FBI to inform them that Moore was distributing what appeared to be top secret documents. This prompted a lengthy investigation, but definitive proof was never forthcoming from that investigation. In the end the consensus sided with Klass, with Friedman being the only central figure in the controversy to maintain the documents' authenticity. Klass did find then-classified documents that failed to mention anything about aliens.