Slaven Bilic has been sacked as West Ham manager with former Everton and Manchester United boss David Moyes announced as replacement on terim basis.
Bilic, 49, left the club with West Ham in the relegation zone.
His last game in charge was Saturday's 4-1 defeat by Liverpool at London Stadium.
West Ham said the club believed a change was necessary "to move forward positively and in line with their ambition".
Moyes, who said he would be interested in the position, will take over until the end of the season.
Speaking to reporters as he left West Ham's training ground, Bilic - who was appointed in the summer of 2015 - said: "There are no hard feelings. I can be very proud of my work here.
"We didn't start this crucial season well. As in many clubs across Europe, the manager is the one who pays the price. It's a very logical move."
With 11 league matches gone, Bilic is the fourth Premier League manager to leave his job this season following Frank de Boer (Crystal Palace), Ronald Koeman (Everton) and Craig Shakespeare (Leicester).
