A Confederation of African Football (CAF) Appeals Board overturned the 1-0 scoreline in favour of hosts Morocco, handing them a 3-0 win, a ruling the FSF have called “unfair, unprecedented, and unacceptable”, suggesting it undermines the credibility of the game on the continent.
"The Senegalese Football Federation condemns this unjust, unprecedented and unacceptable decision, which brings African football into disrepute," it said in a statement.
"To defend its rights and the interests of Senegalese football, the federation will, as soon as possible, file an appeal with the Court of Arbitration for Sport (CAS) in Lausanne."
The CAF Appeals Board found that the original verdict of the organisation’s Disciplinary Committee had erred in handing out a succession of fines and suspensions, but not overturning the result of the match.
In essence, the Appeals Board found that by several Senegal players leaving the pitch for a period of time after Morocco were awarded a late penalty, they had forfeited the match according to Articles 82 and 84 of the AFCON regulations.
However, Senegal will likely argue that only the on-field referee can make that determination and needed to have blown the final whistle, something he failed to do.
They will have a strong case to make, with the worry that the verdict of the Appeals Board will allow other referee decisions to be retroactively changed after the result.
"This is a travesty; this decision is based on absolutely nothing. It has no legal foundation," Abdoulaye Seydou Sow, the Secretary General of SFF, told state broadcaster RTS1.
"And from what we saw this morning when the hearing began, we already had serious doubts — clearly, the judge did not come to rule on the case, he came to carry out orders.
"The president of the federation will get in touch with the lawyers; we will engage with the appropriate authorities, and then we will go to the Court of Arbitration for Sport, which will issue the final decision.
"We will not back down. Senegalese people should have no doubt. The truth is on Senegal's side, the law is on Senegal's side."
The Royal Moroccan Football Federation acknowledged the decision and reiterated that the appeal was aimed solely at having the competition regulations properly applied.
"The Federation reaffirms its commitment to respecting the rules, the clarity of the competitive framework, and the stability of African competitions," it said in a statement.