What does Ezra 5:4 mean?

At that time, Tattenai, the governor of the province west of the Euphrates, Shethar-bozenai, and their associates came and asked, 'Who gave you permission to rebuild this temple and finish these walls?' Ezra 5:4 - Modern Text Bible

(New officials show up and question the authority behind the rebuilding, challenging the Jews’ right to continue.)