Dean Smith has been sacked by Norwich City after their 2-1 loss at 10-man Luton Town on Boxing Day left the East Anglia club fifth in the Championship, 12 points off the automatic promotion spots.
Assistant manager Craig Shakespeare and first-team coach Liam Bramley have also left Carrow Road.
Head of development Steve Weaver and set-piece coach Allan Russell have taken caretaker charge of the team.
Norwich's defeat at Kenilworth Road, courtesy of Luton substitute Cauley Woodrow's 90th-minute strike, was the club's second in succession under Smith after losing to Blackburn Rovers nine days earlier.
And Smith, 51, admitted in his post-match press conference that he was facing the toughest spell of his managerial career.
"Yeah, probably in football in general," he said. "I've not suffered that experience before. It's not nice. Unfortunately, everyone has decided that they are allowed an opinion on managers.
"I put myself in a position where I want to be the head coach of a football club and I think that I'm good at it. Unfortunately, because things have gone against us recently I'm the villain."
