Mysterious monolith in US desert reportedly disappears

A mysterious metal monolith found in the remote desert of the western United States, sparking a national guessing game over how it got there, has apparently disappeared, officials say. The Bureau of Land Management in Utah Tweets, "We may not know if an extraterrestrial or earthling installed the 'monolith' structure, but we can confirm that it has been taken by an unknown party or parties."