Rangers face being investigated by the Scottish Professional Football League after its match delegate reported the club's travelling support at Raith Rovers for alleged sectarian singing.
The away fans at could be heard chanting offensive songs.
Delegate Tom Purdie mentioned the chanting in his report on the game, which was live on radio and television.
It will be up to the SPFL to decide whether any action needs to be taken.
The league body expects to receive the report at the start of the week.
Rangers, who won the match 2-1, have been informed about the contents of the match delegate's report.