Who brought Nehemiah the news about the Jews and Jerusalem?

Answer: Hanani, one of his brothers

Hanani, one of Nehemiah's brothers, came from Judah and reported that the wall was broken down and the gates burned.

“Hanani, one of my brothers, arrived with men from Judah. So I questioned them about the remnant of the Jews who had survived the exile, and also about Jerusalem.”— Nehemiah 1:2 (BSB)