Europa League finalists Dnipro Dnipropetrovsk have been charged by Uefa over their fans' behaviour in their semi-final win against Napoli.
Supporters of the Ukrainian club invaded the pitch after Thursday's 1-0 second-leg victory against the Italian side, which sealed a 2-1 aggregate win.
Dnipro could face disciplinary action for the "improper conduct" of their fans, said the European governing body.
Fans are also accused of unfurling a racist banner and releasing fireworks.
The eastern Ukraine club, who have been playing home matches 240 miles away in Kiev's Olympic Stadium because of the political situation in the region, will face Spanish side Sevilla in Warsaw on 27 May.
The case will be heard by Uefa's control, ethics and disciplinary body on 21 May.