Huddersfield Town have parted company with manager Andy Ritchie following their 4-1 thrashing at Oldham Athletic at the weekend.
Ritchie had been with the Terriers since April last year, but has been unable to help the club challenge for promotion from League One this season.
Town's director of football development, Gerry Murphy, has been installed as caretaker manager.
Chairman Ken Davy told the club's official website: "Andy Ritchie is as nice a person as you could meet and we wish him every success in the future.
"Going forward, however, our focus at Huddersfield Town now has to be appointing a new manager for our Centenary season.
"For whatever reason the reality is, that despite an increase spend and new signings, we have not progressed as we all hoped this season. We will now take a fresh look at our options.
"Huddersfield Town has some great supporters and tremendous potential as well as great history.
"We need to find someone who can harness these elements as we celebrate the club's hundredth year."