Sean Dyche has been sacked as Everton manager after less than two years in charge at Goodison Park.
The 53-year-old departs just hours before Everton are due to host League One side Peterborough in the third round of the FA Cup.
Everton confirmed under-18s head coach Leighton Baines and club captain Seamus Coleman will take charge of the team for that game.
Four members of Dyche's coaching staff - Ian Woan, Steve Stone, Mark Howard and Billy Mercer - have also departed.
The Toffees were beaten 1-0 by Bournemouth on Saturday and sit 16th in the Premier League and just one point clear of the relegation zone.
They failed to register a single shot on target at Vitality Stadium and have won just three league games from 19 in the league this season.