Scunthorpe have parted company with manager Brian Laws following their FA Cup exit at the hands of non-league neighbours Grimsby.
The Iron lost 2-1 to their local rivals in Tuesday night's first-round replay at Glanford Park and Laws has paid the price for the disappointing defeat.
The 52-year-old, who first took charge of the club in 1997, returned for a third spell as manager in October 2012 but could not prevent them from dropping down to the fourth tier in his first season back at the helm.
United sit 12th in the Sky Bet League Two table, two points beneath the play-off places but are without a win in their last five matches.
The following statement on the club's official twitter account: "Scunthorpe United can confirm that they have terminated the contract of manager Brian Laws with immediate effect.
"A further statement will be made later in the day."