Manager Simon Grayson has parted company with Sunderland, who are 22nd in the Championship after 15 games.
His departure, announced 20 minutes after a 3-3 draw with bottom-of-the-table Bolton Wanderers, comes just four months after he was appointed.
The former Preston North End boss took over at the Stadium of Light in June, replacing David Moyes, who left after the club were relegated.
However, he won just one league game as Sunderland boss.
More to follow.