Sunderland have sacked manager Gus Poyet after a run of just one victory in 12 Premier League games.
The Black Cats are one point above the relegation zone after Saturday’s 4-0 home defeat by Aston Villa.
“Sadly, we have not made the progress that any of us had hoped for this season,” said chairman Ellis Short.
“We find ourselves battling, once again, at the wrong end of the table. We have therefore made the difficult decision that a change is needed.”
A Sunderland statement added that an announcement about Poyet’s successor would be made “in due course.”
The Wearsiders face a trip to West Ham on Saturday before a derby against Newcastle on 5 April