The FA have launched a full investigation into the crowd trouble that occurred during Wednesday's EFL 4th round tie between London rivals West Ham United and Chelsea.
The Hammers claimed their most memorable victoryto date at their new London Stadium, with a 2-1 victory over local rivals Chelsea.
Goals fromCheikhou Kouyaté andEdimilson Fernandes were enough to send Bilic's team through to the quarter-finals, where they will travel to Old Trafford and face Jose Mourinho's Manchester United.
The talking point from Wednesday's game however centred on what happened in the stands towards the end of the match, where several Chelsea fans are reported to have started attacking Hammer fans. What followed were ugly scenes of violence which saw numerous scuffles and chairs beingthrown between the rival supporters.
BREAKING: @FA launches investigation into crowd trouble at last night's match between @WestHamUtd and @ChelseaFC at London Stadium. #SSNHQ
Speakingafter the 2-1 win, West Ham manager SlavenBilic was quick to condemn the crowd trouble and those involved in the fighting.
He said: "I can say only I have noticed it of course, but the game was on and I was concentrating more on telling my defender Aaron Cresswell to watch the game, not what was happening off the pitch.
I don't know exactly what happened, but we are totally against it as a club and a team. For those kind of things to happen in England is totally unacceptable.�
Astatementlater released by the East LondonClub, made it clear that they would take the necessary action against fans, as details have since emerged that seven arrests were made following the incident.
West Ham United and London Stadium partners unreservedly condemn the behaviour of individuals involved in incidents during this evening's fixture with Chelsea.
Whilst quickly brought under control, the club, in line with its clear zero tolerance policy, will work closely with London Stadium 185, the Metropolitan Police Service and Chelsea to identify the individuals involved.
London Stadium is fitted with a state of the art Panomera CCTV system which provides HD footage of every area of the ground and has led to the successful identification and subsequent banning of 23 individuals already this season.
Once identified, those found to have acted improperly will be banned from attending any West Ham United fixtures for life and we will request the courts serve banning orders to prevent these individuals attending any other football
Chelsea fan reportedly cut open after coin is thrown by West Ham fans - The Sun https://t.co/mZHeuSMnS8
West Ham United have 10,000 under-16 season ticket holders and 25,000 supporters who attend as part of a family unit, and the Club and Stadium partners have been working hard to ensure that the Stadium is a safe and family friendly environment for all home and away supporters.
As such, the purchase of tickets for tonight's fixture was limited to supporters with a recorded West Ham United purchase history and limited to only one ticket per person.
We must stress that the overwhelming majority of supporters who have visited London Stadium have supported the team exceptionally and behaved impeccably.�