Lazio are set to launch an appeal after being ordered to play their next two home European matches behind closed doors by UEFA.
The ban was enforced following crowd trouble during Lazio's Europa League last-32 match against Borussia Monchengladbach, during which fireworks were set off and there were allegations of racist behaviour.
Lazio were also fined €40,000 by UEFA's control and disciplinary committee, but Lazio president Claudio Lotito believes the punishment is unfair on the club and the remainder of its well-behaved fans.
"We cannot as a club be penalised for the mistakes of a small minority (and) we will lodge an appeal," Lotito told RaiSport. "Lazio did everything we could and should have done to stop this from happening.
"It seems absurd to me that we have to play behind closed doors, which will seriously damage the club economically and stop the fans from participating in this event.
"We must distinguish between the delinquents who act on their own volition and those fans who express themselves in a civilised fashion."