A group of Jews who wanted to destroy Rome.
(Hillsdale College - Ancient Christianity)
With the Dead Sea Scrolls, a copper scroll was discovered that contained an inventory of ~60 locations of hidden gold, silver, and incense. They could possibly have been Jerusalem Temple treasures secured by Zealots from the Romans in A.D. 66-70.
(The Origin of the Bible: Newly Updated by F. F. Bruce, J. I. Packer, Philip W. Comfort, and Carl F. H. Henry, 2020. Texts and Manuscripts of the Old Testament by Mark R. Norton, Page 164)