West Ham have given further details of the enhanced security measures put in place for Saturday's Premier League game against Southampton at the London Stadium.
The Hammers' last home game against Burnley on March 10 was marred by a number of crowd disturbances.
Five fans invaded the pitch while co-owner David Sullivan was struck by a coin after a protest in front of the directors' box turned nasty. A number of banning orders have since been issued and more are expected to follow.
The club are now taking steps to avoid any repeat and have announced that there will be an increased police and security personnel presence this weekend.