David Hopkin has stood down as Bradford City manager.
Hopkin's decision comes six months into his tenure at the Northern Commercials Stadium.
The Bantams suffered a poor defeat at the hands of Walsall on Saturday and Hopkin has this morning resigned from his role with immediate effect.
The former Livingston manager said: “I am disappointed but feel the time is right for me to step aside and allow someone to come in and attempt to keep the club in League One.
“I have given my all over the past six months. I took on a tough job and have left no stone unturned in my efforts to help us climb the table.
“The club means a great deal to me, as a former player, and that is why I have made this decision - with a quarter of the season remaining.
“I would like to take this opportunity to thank the incredible Bradford City fans. This has been a hugely difficult season for everyone involved and they have shown me a great deal of support. I wish the club the very best for the future.”
Interim chief executive Julian Rhodes added: “Our thanks must go to David, who has put in a great deal of effort since taking over the reins last year.
“I know just how hard he has worked, in extremely difficult circumstances, and he leaves with a great amount of respect.
“On behalf of everyone at the club, we wish David and his family all the best for the future.”
Martin Drury, assisted by Anton McElhone, has been installed as caretaker manager for Saturday’s Sky Bet League One game against Portsmouth.