West Ham beat Rapid Vienna 2-0 on Thursday night to maintain their 100 per cent record in the competition, but there were some unsavory scenes in the stands.
Declan Rice tapped the home side in front during the first half after a nice move from the Hammers. It was a joyous moment for the midfielder, but one that sparked a row in the stands between a pocket of home fans and the away team.
Urine bottles were allegedly thrown by both groups of supporters, according to police officers present at the game, while reports on social media suggested other objects were also thrown.
The drama in the stands died down for the rest of the game as Rapid were denied a penalty by VAR and Said Benrahma secured all three points for the Hammers in second-half added time.
But once the full-time whistle sounded, some away fans again found a wave of aggression crashing in on them.
This time they chose to confront offers from the police who had forced their way through the crowd in an attempt to control the situation. Instead, supporters were filmed appearing to punch police.
It added a slightly sour note to what was supposed to be a party night for the Hammers.
The clash marked the first time West Ham have played a competitive European game at home for 15 years, apart from the play-offs.
Mark Noble has been chosen to start on the occasion as he continues his farewell tour – the midfielder is set to hang up his boots at the end of the 2021-22 season.
A fireworks display and light show greeted the players on the pitch before police were forced to deal with a few flying sparks in the stands.