Lyon and Besiktas were due to kick off their Europa League quarter final first leg tie at 8.05pm Irish time.
But crowd trouble and a full scale pitch invasion prior to kick off saw the start time delayed at Lyon's Stade de Lumiere, although the game has since kicked off.
There was trouble outside the ground ahead of the match between French side Lyon and Turkish champions Besiktas.
As flashpoints unfolded, Lyon tweeted: "Projectiles and flares have been launched from the upper tiers of the stands, forcing fans to take refuge on the pitch".
Des projectiles et des pétards lancés depuis le haut des tribunes obligent des supporters à se réfugier sur la pelouse... #OLBES pic.twitter.com/xShgpC5HRR
— Olympique Lyonnais (@OL) April 13, 2017
A fan climbs the goal as supporters invade the pitch a few minutes before the Europa League quarterfinal soccer match between Lyon and Besiktas, in Decines, near Lyon, central France, Thursday, April 13, 2017. (AP Photo/Laurent Cipriani)
A police officer tries to stop supporters as they invade the pitch a few minutes before the Europa League quarterfinal soccer match between Lyon and Besiktas, in Decines, near Lyon, central France, Thursday, April 13, 2017. (AP Photo/Laurent Cipriani)
People on the pitch a few minutes before the Europa League quarterfinal soccer match between Lyon and Besiktas, in Decines, near Lyon, central France, Thursday, April 13, 2017. (AP Photo/Laurent Cipriani)
