Birmingham have confirmed manager Chris Hughton has left the club to take over at Norwich City.
The Blues have agreed a compensation package for Hughton and three of his backroom staff to replace Paul Lambert at Carrow Road.
Assistant manager Colin Calderwood, first-team coach Paul Trollope and chief scout Ewan Chester have also made the switch to Norfolk.
Acting Blues chairman Peter Pannu told the club website: "We'd like to thank Chris and his team for their efforts over the last 12 months and they leave with our best wishes.
"Chris is a great man and a proven manager and we didn't want to stand in his way when Norwich made an approach with the offer of a top-flight managerial position.
"We will now actively seek a new coaching team to build on the good work done during the 2011/12 season."