UEFA have confirmed they have opened disciplinary proceedings against Lazio for the alleged racist behaviour of some of their fans during last night's Europa League clash against Tottenham.
Aaron Lennon, Jermain Defoe and Andros Townsend all appeared to be the subject of monkey chants from the away end during Spurs' 0-0 stalemate against the Italian side at White Hart Lane.
After receiving reports from last night's referee Ovidiu Alin Hategan and match delegate Adonis Procopiou, European football's governing body this evening charged the Rome-based club with improper conduct.
A statement read: "UEFA has opened disciplinary proceedings against SS Lazio for the improper conduct of the club's supporters (racist behaviour) during the UEFA Europa League group stage match on Thursday 20 September between Tottenham Hotspur FC and the Italian side."
UEFA's Control and Disciplinary Body will hear the case on 18 October.
Article 11 of UEFA's disciplinary regulations states that Lazio can expect a fine of €20,000 if their fans are found guilty of racial abuse.
Should they decide further action is deserved, UEFA could force Lazio to play one or more of their games behind closed doors.
They could even be stripped of some of their points or disqualified from the competition altogether, although this punishment is likely to be meted out in only the most extreme cases.