The club said it had taken "swift and decisive action" against individuals found to have committed "acts of severe violence and physical aggression."
2017 ScheduleAll times ET
Club already involved in one case with stadium landlords the London Legacy Development Corporation (LLDC) over increasing capacity of venue.
West Ham vice-chairman Karren Brady has issued a public apology for the club's problems on and off the pitch, and said the board takes responsibility.
West Ham's next home game with Southampton will have a "significantly larger police presence" following the crowd disturbances last weekend.
West Ham United are likely to avoid being forced to play Premier League fixtures behind closed doors at the London Stadium, sources tell ESPN FC.
Responsibility for security at the London Stadium is unlikely to change hands despite the scenes which marred West Ham's loss to Burnley on Saturday.
An emergency meeting was held on Monday morning following pitch invasions and crowd disorder during West Ham's 3-0 defeat to Burnley on Saturday.
West Ham are facing a Football Association (FA) investigation after a series of pitch invasions and widespread supporter unrest.
Frank Lampard described the atmosphere at the London Stadium as "toxic" after angry protests marred West Ham's Premier League defeat to Burnley.
Tensions at West Ham reached boiling point during their 3-0 defeat at Burnley as some fans invaded the pitch while others vented their anger at the bo
Moments after Ashley Barnes gave the visitors the lead, a man ran onto the pitch from the home end.
Joe Hart has been thrown a World Cup lifeline by David Moyes, with the West Ham boss handing the England international the start against Burnley.
West Ham and their supporters are aiming to improve the fan experience at the London Stadium after allegations of continued intimidation and threats.
West Ham have been fined £30,000 by the Football Association after admitting to a whereabouts breach of anti-doping regulations.
West Ham fans told co-owner David Gold to leave the club in an angry confrontation following the 4-1 defeat against Swansea City.
Swansea moved out of the Premier League relegation zone with a 4-1 home win over lacklustre West Ham.
|Brighton & Hove Albion||30||8||10||12||-12||34|
|West Ham United||30||7||9||14||-21||30|
|West Bromwich Albion||31||3||11||17||-25||20|