Balderdash. First of all, the real story is not even about Roswell.
This is interesting for a few reasons. The article by Jon Austin, a writer for Express who recycles UFO stories from other sites without doing any fact checking or research.
Austin's story was pilfered from an article by Sally Painter at Top Secret Writers that had its own problems. The FBI memo is the infamous Guy Hottel memo, which transcribed notes about the Silas Newton Azetc, NM flying saucer crash hoax (made famous by Frank Scully).
The only thing of value in the piece is about the 1994 CIA memo “Seaside Town to Build Center for UFO Study,” but
that was just text from a Japanese newspaper, not a report.
http://www.foia.cia.gov/sites/default/files/document_conversions/89801/DOC_0005517787.pdf
FBI Document Revealed Feds Concern About Hakui UFO Museum