What news did a fugitive from Jerusalem bring Ezekiel in the twelfth year of the exile?

Answer: The city has been taken

On the fifth day of the tenth month of the twelfth year, a fugitive from Jerusalem reported, "The city has been taken!"

“In the twelfth year of our exile, on the fifth day of the tenth month, a fugitive from Jerusalem came to me and reported, “The city has been taken!””— Ezekiel 33:21 (BSB)