The Swiss champions must play the first-leg of their quarter-final tie with Valencia behind closed doors after crowd trouble temporarily halted their clash with Red Bull Salzburg
Uefa's Control and Disciplinary Body announced on Wednesday that the Swiss champions have been ordered to play their Europa League quarter-final first-leg against Valencia behind closed doors after they were charged with two offences in relation to the behavious of their supporters in Austria.
Referee Manuel Grafe was forced to stop the game after travelling fans threw missiles onto the pitch at the Red Bull Arena, angered by Marek Suchy's red card and Jonatan Soriano's opening goal.
Basel, who were also hit with a €107,000 fine and a second suspended closed-doors sentence, have opted not to appeal against the decision and have condemned the behaviour of the offenders.
"FC Basel 1893 have gained widespread recognition for continued sporting success in Europe, so it is with all the more reason that we regret the significant financial loss and impairment of the club's image due to the misbehaviour of the few," a statement on the club's official website reads.
"It is particularly regrettable that the team has to play in this quarter-final against Valencia without the immensely valuable crowd support that our followers would bring to this attractive game.
"Therefore, FCB distances itself in all forms from those who have added considerable damage to the team and innocent fans."
Earlier in the season, Basel were hit with a fine after security failed to stop a Greenpeace protest during the Champions League clash with Schalke.
Last term, Lazio were fined €120,000 and threatened with stadium closure after similar crowd trouble in matches against Tottenham and Maribor, while Inter were forced to play four matches behind closed doors after supporter unrest interrupted their 2005 clash with AC Milan.
St Jakob Park has become something of a fortress for Basel this season, who are unbeaten in their last 12 fixtures there and have lost just two home games all season.