Just weeks after the Indian Army allegedly discovered the mysterious footprint of the yeti, the FBI released documents Wednesday regarding a 1976 investigation into another hairy mythical creature: Bigfoot.

In 1976, federal investigators responded to a request by Peter Byrne, director of the Bigfoot Information Center and Exhibition, which was sponsored by the Academy of Applied Science in Boston, to analyze mysterious hairs attached to a piece of skin. After the "Washington Environmental Atlas" wrote in 1975 that the FBI had analyzed a scrap of hair and it "was found to belong to no known animal," Byrne asked whether the FBI had truly conducted this analysis.

"Will you kindly, to set the record straight, once and for all, inform us if the FBI has examined hair which might be that of a Bigfoot; when this took place, if it did take place; what the results of the analysis were," Byrne wrote in an Aug. 26 letter.

They had to release him after 72 hours, though. ;-) To read more, click here.