Watch: Shocking crowd violence mars Europa League tie as elderly fans and children caught in the chaos
The start of tonight's Europa League quarter-final tie between Lyon and Besiktas at the Parc Olympique Lyonnais was delayed after fan violence erupted ahead of kick-off.
Lyon tweeted that supporters were forced to 'seek refuge' on the pitch after fighting broke out in the stands, with horrific pictures showing elderly supporters and children caught in the chaos.
One picture shows a young fan being lowered out of the stand to escape the violent scenes.
Both sets of players had emerged to warm up when objects began to rain down from the stands, causing an unexpected delay to the start of proceedings in France.
Order was subsequently restored and the game has since got underway.