Sturm Graz have condemned the “damaging” behaviour of a fan who threw a full drink at an assistant referee which cut his head open.
The incident happened at the Austrian club’s home Europa League fixture with Cypriot club AEK Larnaca on Thursday.
TV footage clearly shows a home fan rising from his seat and aiming the heavy projectile towards the assistant.
Charity Ref Support said it believed that the game “should have been abandoned”.
“We believe the decision by Uefa to continue their Europa League game after an assistant referee suffered a serious head injury when an object was thrown from the crowd was a missed opportunity to support match officials,” the statement continued.