Midlands rivals Derby and Nottingham Forest have been fined by the Football Association and warned about future conduct following their 'unsavoury and avoidable' behaviour.
A Championship match between the two foes at the City Ground on 29th August was marred by a melee involving players and staff.
The incident occurred after Forest striker Nathan Tyson paraded in front of Derby fans while waving a corner flag following his side's 3-2 win.
Derby and Tyson admitted their respective charges of failing to control players and officials, and improper conduct.
Forest denied their charge but were still fined £25,000, £10,000 of which is suspended, while Derby were punished by £20,000, £15,000 of which is suspended, and Tyson has to pay £5,000 and has received a suspended two-match ban.
FA Regulatory Commission chairman Peter Powell said: "The commission found this incident to be both unsavoury and avoidable, which was caused in the outset by the actions of a professional footballer who, on this occasion, behaved naively and below the level that would have been expected.
"Such action, particularly in relation to a high-profile local derby, caused a safety issue to the general public which simply should not have happened.
"The regulatory commission however recognised the subsequent immediate acceptance of the charge, as they did in relation to the acceptance of the charges by Derby.
"The commission recognised the exemplary record of both clubs, which is the main reason for part of the sanctions being suspended, and would hope that both clubs do all within their power to ensure no such incident is repeated in the future."