'Book of the Chronicles' in the Bible

After the matter had been fully investigated, Bigthan and Teresh were hanged on a pole, and this was recorded in the Book of the Chronicles in the presence of the king.

Now as to all the powerful and great deeds of Ahasuerus, along with an exact statement about the high position of Mordecai to which the king promoted him, these things are written in the Book of the Chronicles of the Kings of Media and Persia, are they not?