1957-10-10 / Pinar del Rio, Cuba / unresolved
On November 20, 1957, the FBI Legal Attache in Havana reported that Jose Maria Nieto and Carmelo Guzman had told the Havana newspaper Diario de la Marina they saw a flying disc in the shape of a man's hat hovering silently over Matahambre, Pinar del Rio Province, Cuba, before it disappeared at high speed toward the sea. An FBI memo dated November 12, 1957, from R. R. Roach to A. H. Belmont noted a surge in flying saucer and UFO reports across the United States following the Soviet release of Sputnik, which Air Force Intelligence told the Bureau were all resolved as nonauthentic.
Flying disc in the shape of a man's hat, larger than ordinary airplanes, completely silent, disappeared at very high speed towards the sea, Matahambre, Cuba, November 11, 1957