NYON, Switzerland -- UEFA has punished Basel for fan hooliganism by ordering the Swiss club to play its home Europa League quarterfinal against Valencia in an empty stadium.
UEFA says a second stadium-closure order was deferred for a two-year probationary period.
Basel fans forced play to be stopped by throwing fireworks on the pitch during its 2-1 victory at Salzburg last Thursday.
The referee took the teams to the dressing rooms for several minutes during the first half of the last-16, second-leg match.
Basel advanced 2-1 on aggregate, and hosts Valencia in the first leg on April 3.
Basel must also pay a 107,000 euro ($148,000) fine. UEFA typically imposes bigger fines when broadcast schedules are disrupted.
The club can appeal.