Chelsea announced that Thomas Tuchel left his role as head coach with immediate effect on Wednesday.
The sudden departure of the German, who took charge of the Blues in January 2021, came on the back of Chelsea's 1-0 defeat to Dinamo Zagreb in their UEFA Champions League opener just a day earlier.
Under the 49-year-old, Chelsea also had a shaky start to the current Premier League season as they lost 3-0 to Leeds United and 2-1 to Southampton.
"On behalf of everyone at Chelsea FC, the club would like to place on record its gratitude to Thomas and his staff for all their efforts during their time with the Club.
"Thomas will rightly have a place in Chelsea’s history after winning the Champions League, the Super Cup and Club World Cup in his time here.
"As the new ownership group reaches 100 days since taking over the club, and as it continues its hard work to take the club forward, the new owners believe it is the right time to make this transition.
"Chelsea’s coaching staff will take charge of the team for training and the preparation of our upcoming matches as the Club moves swiftly to appoint a new head coach," read an official statement from Chelsea.
At the time of writing, no permanent or temporary successor was identified by the club.