Cooper sacked by Peterborough
Cooper started his managerial career at Tamworth before joining Kettering Town.
He became Peterborough's new boss on November 14 2009 following the departure of Darren Ferguson.
However, he lasted just 13 games in the London Road hot-seat, winning one game, drawing four and losing eight.
“I am deeply shocked and saddened that my contract with Peterborough United has been terminated,"Cooper said.
"I would like to offer my sincere thanks to all of the players, all of whom have been 100 percent behind me, and also to my staff. Finally, I would like to thank the fans for their support and wish the club every success in the future.”
Commenting on Cooper's departure, LMA Chief Executive, Richard Bevan, said;
"When Mark took over as manager of Peterborough United they were in a relegation battle and in the relegation zone.
"It is very disappointing for a club to part with a manager after only 13 games in charge when there are still 18 league games to play this season.
"I am sure that a manager of Mark’s potential, will be back in management in the not too distant future."