West Ham United have confirmed that tighter safety and security measures will be put in place for their next home match.
Four separate pitch invasions took place during the Hammers' last game at the London Stadium, a 3-0 loss to Burnley last Saturday.
Co-chairmen David Gold and David Sullivan were also subjected to verbal abuse from the terraces, which forced them to leave the directors' box.
The measures include increased police presence inside and outside the stadium, bolstering the response teams, restricting access to the area in front of the directors' box, and a review of spectator movement around the stadium.
The London Stadium Safety Advisory Group (SAG) met on Thursday and decided on the measures, also warning fans that future trouble could lead to closures.
"The SAG must make clear that in the event of future disorder, it would seriously consider advising the certifying authority to take forward this sanction," a statement read. "Playing behind closed doors would be a great shame for the majority of fans who wish to watch and support their team in safety."
West Ham released a follow-up statement which read: "Following the meeting of the Safety Advisory Group at London Stadium today, West Ham United welcome the announcement of a number of safety and security measures which will be implemented for our next home match against Southampton on Saturday 31 March."
These measures include increased police presence inside and outside the stadium, bolstering the response teams, restricting access to the area in front of the directors' box, and a review of spectator movement around the stadium.
The club currently sit three points above the Premier League relegation zone with eight games left to play.
