UEFA has ordered Lazio to play its next two home matches in European competition in an empty stadium as punishment for a fourth offence of racist behaviour by its fans this season.

Lazio's Olympic Stadium will first be closed to supporters when the Rome club hosts Stuttgart in a Europa League last-16, second-leg match on March 14.

UEFA did not specify the offensive behaviour, which was widely reported to have been fans making fascist-style salutes.

Lazio was also fined (euro) 40,000 ($52,000 US). Its UEFA fines now total (euro) 220,000 ($294,000 US) this season.

Lazio's latest sanction followed incidents during a 2-0 victory against Borussia Moenchengladbach last Thursday.

UEFA previously found Lazio fans guilty after home and away matches against Tottenham, and away to Maribor.