Middlesbrough Football Club confirmed this evening that Tony Mowbray has left the club with immediate effect.
Assistant manager Mark Venus will take charge of the team until further notice.
In a brief statement, Middlesbrough FC paid tribute to its former captain, who had returned as manager in 2010:
The club would like to place on record their sincere thanks to Tony Mowbray for all of his substantial efforts, dedication and integrity. He leaves with the very best wishes of all at the club.
More top news
PepsiCo has said it is proposing the closure of its Walkers Snacks factory in County Durham putting 380 jobs at risk.
Robert Dunn said the 27-year sentence given to his brother was too lenient and said he would build the gallows himself to hang him
Rafa Benitez says Newcastle United must keep working hard to stay top with a tough run of games coming up in March