When did the Ark of the Covenant disappear and what are the theories surrounding its mysterious disappearance?

The Ark of the Covenant disappeared around 587 BC when the Babylonians conquered Jerusalem. There are various theories surrounding its mysterious disappearance, including that it was hidden or taken to a secret location, or that it was destroyed during the Babylonian conquest. Another theory suggests that it was taken by a foreign power or that it is still hidden somewhere waiting to be discovered.