UEFA will study their match delegate's report before deciding whether to take action against the Bulgarian Football Federation over racist abuse during Friday's Euro 2012 qualifier with England.
Several of England's black players were subjected to monkey noises throughout their team's 3-0 win at the Vasil Levski Stadium, prompting English officials to complain to their Bulgarian counterparts after the match.
Bulgaria coach Lothar Matthaus was dismayed by the abuse suffered by Chris Smalling, Ashley Cole, Theo Walcott and Ashley Young and apologised after the match.
Rooney and Walcott both admitted they were aware of the abuse.
"As players, we could hear it on the pitch," Rooney said. "It has been going on for years and it is not right. It needs to stop and hopefully something can be done about it."
Now UEFA will assess the evidence before deciding what to do.
"UEFA are aware of the situation," a spokesman told Britain's Press Association on Saturday.
"We will study the reports, including the delegate's report, on Monday."
The issue of racism has been a persistent problem for England in away matches in eastern Europe.
The Football Association also demanded an international with Spain in 2009 should be played in Seville rather than Madrid after encountering racism during a previous game in the capital.