Zenit investigating Roberto Carlos racism claim

Zenit St Petersburg have launched an investigation into an alleged incident of racist abuse involving former Brazil international Roberto Carlos.

Carlos, 37, now plies his trade for Russian outfit Anzhi Makhachkala and was apparently taunted by Zenit fans prior to his side's 2-0 defeat to the reigning Premier Liga champions on Monday.

A photograph has since emerged of a supporter appearing to wave a banana in the direction of the former Real Madrid star as the two teams entered the field.