Swindon manager Mark Cooper has left the club following Saturday's defeat at Millwall.
Cooper, 46, steered Swindon to the League One playoffs last season, but a 2-0 loss at the New Den has left them without a league win in six matches and one point above the relegation zone.
The club said a full statement would come Monday, but announced Cooper's departure on Twitter:
BREAKING: Swindon Town Football Club have this evening parted company with manager, Mark Cooper. #STFC
- Swindon Town FC (@Official_STFC) October 17, 2015
Cooper, whose squad have been hit by injuries to key players this season, chose not to take charge at Sheffield Wednesday in the summer and is understood to have also turned down Barnsley.
He has worked with a limited budget since being appointed as Kevin McDonald's successor at the County Ground in the summer of 2013 following a brief spell as assistant manager.
Cooper steered Swindon to fourth place in League One last season and after beating Sheffield United in the playoff semifinals they lost out to Preston in the final.
But the sale of key players such as Ben Gladwin and Massimo Luongo in the summer and a spate of injuries have seen the Robins win only three of their 12 league games this season.
Cooper, son of former Leeds and England defender Terry, started out in management at Tamworth and has had spells in charge of Kettering (twice), Peterborough, Darlington and Telford.