All Serbia's players and staff involved in Tuesday night's hugely controversial UEFA Under-21 play-off against England have been asked to make formal statements.
The match, which England won 1-0 thanks to a last-minute goal from Connor Wickham to complete a 2-0 aggregate triumph, was marred by unsavoury scenes at the final whistle with scuffling on the pitch amid accusations of racism from the stands towards England left-back Danny Rose.
The Serbian federation (FSS) has announced its disciplinary committee held an extraordinary session on Thursday morning at which the request was made.
UEFA on Wednesday night announced charges against both the FSS and the English Football Association for the improper conduct of their players, and against the Serbs for "alleged racist chanting" by fans.
The FSS has now revealed an internal investigation is also under way.
A statement on its official website, www.fss.rs, read: "In Belgrade today, there was an extraordinary session of the disciplinary committee of the Football Association of Serbia.
"It was decided to officially request statements from all the players and members of the professional staff of the Under-21 Serbia national team who took part in the second leg of the play-off on October 16 in Krusevac.
"The deadline for submission of these statements is three days. The disciplinary committee will decide which individuals will be subject to disciplinary proceedings."