Besides the 18,000 Swedish cases are thousands of cases from Denmark and other Nordic countries. Thousands of US cases on micro film are too included. The archive ( Norrkoping) will be open to the public domain starting with May 9-10, 2009.
The chairman of UFO Sweden Clas Svahn mentions one case of special interest, a case from 1980. A cigar shaped UFO submerged itself into a mountain lake and never came up again according to witnesses. Svahn comments, "it may still be there, since the lake never been monitored by divers."
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Sweden releases 18,000 UFO reports to the public
