The Federal Bureau of Investigation released the files of Whitney Houston, including several fan letters and FBI paperwork regarding an extortion case that was closed without anyone being prosecuted, according to reports.

A letter dating back to 1992, marked "extortion" by the FBI, was sent to Houston's offices on Nippy Inc in New Jersey, which a woman who the singer considered a friend demanded that unless Houston paid $100,000, "certain details" of her "private life" would be exposed. A follow-up letter raised the amount to $250,000 and this "friend" claimed to have "intimate details" of Whitney's "romantic relationships."

The FBI interviewed Houston, two lawyers and her father, John Houston. The singer told authorities she considered the woman "a friend" and discussed personal matters about her lfe with her. The woman demanded hush money, and Houston eventually paid off the woman.

The agency also discovered fan mail from an unidentified male writer who professed his love for the singer.

"Miss Whitney, you are just so pretty and so beautiful. I just cannot stop thinking about you. Many times when I think about you I will start to shake..... I really and truly am in love with you," the fan wrote.

And in another letter he wrote: "Over the past 17 months, I have sent ... 66 letters to Miss Whitney. ... I have been to 9 of Miss Whitney's concerts and I have tried to give her flowers twice at the concerts. ... I have tried to stop writing the letters and to give up twice but after a few weeks I had to start writing again."

The writer went on to say that getting no response from Houston was very frustrating. "I have gotten mad at her a few times. ... it scares me that I might come up with some crazy or stupid or really dumb idea that might be as bad or even worse than that... I might hurt someone with some crazy idea."

According to the FBI report, agents tracked down the writer at his apartment and determined his 'crazy idea' would have really damaged the I Will Always LoveYou singer's reputation so "he did not follow through on it."

FBI agents also traveled to Brussels, Belgium to interview a Dutch fan who claimed to have sent threatening tapes to Houston, accusing her of performing his music. In 1999, the FBI noted that the fan "pledged there would be no further attempts on his part to communicate in any way with Houston."