Unai Emery has been sacked as Arsenal manager after 18 months in charge.
The Spaniard, who previously led Paris St-Germain to the French league title and won three Europa Leagues with Sevilla, was appointed Gunners boss in May 2018, succeeding Arsene Wenger.
He has been replaced on a temporary basis by assistant and former Arsenal midfielder Freddie Ljungberg.
Speaking on behalf of the Gunners' owner, Josh Kroenke released a statement saying: "Our most sincere thanks go to Unai and his colleagues who were unrelenting in their efforts to get the club back to competing at the level we all expect and demand. We wish Unai and his team nothing but future success.”
An official club statement on the matter went on to read: "The decision has been taken due to results and performances not being at the level required.
"We have asked Freddie Ljungberg to take responsibility for the first team as interim head coach. We have full confidence in Freddie to take us forward.
"The search for a new head coach is underway and we will make a further announcement when that process is complete."