The start of the quarter-final first leg was delayed by 45 minutes as officials attempted to clear the Parc OL playing area of fans.
According to an AFP reporter at the ground, the fans were attempting to protect themselves from firecrackers and others objects raining down from the stands above.
The incidents were the latest in a tense week for European football after the Borussia Dortmund team bus was attacked with explosives on Tuesday just before their Champions League game at home to
In the aftermath of that attack, which pushed the game back by 24 hours, Uefa had demanded a re-evaluation of the security measures “wherever necessary”.
“The @EuropaLeague match between @OL and @Besiktas has been delayed due to crowd disturbances. Further information to come,” tweeted Uefa spokesman Pedro Pinto.
Twenty minutes later, Pinto tweeted: “Authorities at Stade de Lyon confirm @EuropaLeague match between @OL and @Besiktas can take place. Kick off expected soon.”
The game eventually started at 1950GMT (9.50pm SA time) with Aulas sitting amongst
Earlier on Thursday, Turkish fans had clashed with security forces in
“The Turkish supporters charged at a steward and injured him,” he said. “The supporters are waving big Turkish flags.”
Trouble also erupted between rival fans outside another entrance to the stadium as smoke billowed from tear gas canisters.
A group of Turkish fans from
They were dispersed by security guards and no arrests were made.
Authorities categorised the match as maximum risk with 1 000 stewards drafted in for the encounter.
Around 15 000-20 000 Turkish fans had been expected in Lyon for the game taking place at a stadium situated in an area of the city which is home to many people of Armenian origin.