![Brussels, Belgium. 13th Apr, 2023. AZ Alkmaar supporters climb outside of the stands after a soccer game between Belgian RSC Anderlecht and Dutch AZ Alkmaar, a first leg game of the quarterfinals Brussels, Belgium. 13th Apr, 2023. AZ Alkmaar supporters climb outside of the stands after a soccer game between Belgian RSC Anderlecht and Dutch AZ Alkmaar, a first leg game of the quarterfinals](https://c8.alamy.com/comp/2PMJXN9/brussels-belgium-13th-apr-2023-az-alkmaar-supporters-climb-outside-of-the-stands-after-a-soccer-game-between-belgian-rsc-anderlecht-and-dutch-az-alkmaar-a-first-leg-game-of-the-quarterfinals-of-the-uefa-europa-conference-league-competition-thursday-13-april-2023-in-brussels-belga-photo-virginie-lefour-credit-belga-news-agencyalamy-live-news-2PMJXN9.jpg)
Brussels, Belgium. 13th Apr, 2023. AZ Alkmaar supporters climb outside of the stands after a soccer game between Belgian RSC Anderlecht and Dutch AZ Alkmaar, a first leg game of the quarterfinals
![Aston Villa are on red alert in Alkmaar with security raised as they travel to the Netherlands where the hosts' fans attacked fought two Legia Warsaw players earlier this month and attacked Aston Villa are on red alert in Alkmaar with security raised as they travel to the Netherlands where the hosts' fans attacked fought two Legia Warsaw players earlier this month and attacked](https://i.dailymail.co.uk/1s/2023/10/25/21/77001419-0-image-a-61_1698266640313.jpg)
Aston Villa are on red alert in Alkmaar with security raised as they travel to the Netherlands where the hosts' fans attacked fought two Legia Warsaw players earlier this month and attacked
![Chaos in Holland as West Ham PLAYERS clash with hooded AZ Alkmaar 'ultras' attacking their families after Europa Conference League semi-final victory - before one Hammers fan single-handedly holds back Dutch hooligans - Chaos in Holland as West Ham PLAYERS clash with hooded AZ Alkmaar 'ultras' attacking their families after Europa Conference League semi-final victory - before one Hammers fan single-handedly holds back Dutch hooligans -](https://i.dailymail.co.uk/1s/2023/05/19/07/71169119-0-image-a-28_1684476489539.jpg)
Chaos in Holland as West Ham PLAYERS clash with hooded AZ Alkmaar 'ultras' attacking their families after Europa Conference League semi-final victory - before one Hammers fan single-handedly holds back Dutch hooligans -
![BRUSSELS - AZ Alkmaar supporters during the UEFA Conference League quarter final match between RSC Anderlecht and AZ Alkmaar at Lotto Park stadium on April 13, 2023 in Brussels, Belgium. ANP ED BRUSSELS - AZ Alkmaar supporters during the UEFA Conference League quarter final match between RSC Anderlecht and AZ Alkmaar at Lotto Park stadium on April 13, 2023 in Brussels, Belgium. ANP ED](https://c8.alamy.com/comp/2PMJDJC/brussels-az-alkmaar-supporters-during-the-uefa-conference-league-quarter-final-match-between-rsc-anderlecht-and-az-alkmaar-at-lotto-park-stadium-on-april-13-2023-in-brussels-belgium-anp-ed-van-de-pol-2PMJDJC.jpg)
BRUSSELS - AZ Alkmaar supporters during the UEFA Conference League quarter final match between RSC Anderlecht and AZ Alkmaar at Lotto Park stadium on April 13, 2023 in Brussels, Belgium. ANP ED
![West Ham players could face UEFA bans over defending family members that came under threat from AZ Alkmaar ultras | Goal.com UK West Ham players could face UEFA bans over defending family members that came under threat from AZ Alkmaar ultras | Goal.com UK](https://assets.goal.com/v3/assets/bltcc7a7ffd2fbf71f5/blt7c0d69f12a67c991/6469d77ee1ade56d34bca3ae/West_Ham_Fans_vs_Alkmaar.jpg)
West Ham players could face UEFA bans over defending family members that came under threat from AZ Alkmaar ultras | Goal.com UK
![UEFA to investigate after AZ Alkmaar fans confront West Ham players' families | Stadium Astro - English UEFA to investigate after AZ Alkmaar fans confront West Ham players' families | Stadium Astro - English](https://images.performgroup.com/di/library/omnisport/ab/74/the-ugly-scenes-marred-a-historic-night-for-the-club_2.72233330.jpg?t=858530104)
UEFA to investigate after AZ Alkmaar fans confront West Ham players' families | Stadium Astro - English
![Affrontements après AZ Alkmaar-West Ham: qui est "Knollsy", le supporter anglais qui a affronté une armée de hooligans? (VIDÉOS) - La DH/Les Sports+ Affrontements après AZ Alkmaar-West Ham: qui est "Knollsy", le supporter anglais qui a affronté une armée de hooligans? (VIDÉOS) - La DH/Les Sports+](https://www.dhnet.be/resizer/G6uwtDr7sFod9FyL7c0CIncJKKs=/1200x800/filters:format(jpeg):focal(1766.5x1186:1776.5x1176)/cloudfront-eu-central-1.images.arcpublishing.com/ipmgroup/7EWGSPV4EVE6HCLNNKYZZXZPOY.jpg)
Affrontements après AZ Alkmaar-West Ham: qui est "Knollsy", le supporter anglais qui a affronté une armée de hooligans? (VIDÉOS) - La DH/Les Sports+
![Na het supportersgeweld in de Conference League: fans AZ niet welkom bij wedstrijd in Nijmegen | Het Nieuwsblad Mobile Na het supportersgeweld in de Conference League: fans AZ niet welkom bij wedstrijd in Nijmegen | Het Nieuwsblad Mobile](https://img.nieuwsblad.be/MeZZRu78iyHDB8DmCT3jF5T2c2E=/960x640/smart/https%3A%2F%2Fstatic.nieuwsblad.be%2FAssets%2FImages_Upload%2F2023%2F05%2F20%2Feab80c7a-9282-4b7d-9da7-7eadb99799bc.jpg)
Na het supportersgeweld in de Conference League: fans AZ niet welkom bij wedstrijd in Nijmegen | Het Nieuwsblad Mobile
![Inside AZ Alkmaar 'Ben Side Ultras' firm and their bloody history of stabbings & pipe bombs after West Ham fans attack | The Sun Inside AZ Alkmaar 'Ben Side Ultras' firm and their bloody history of stabbings & pipe bombs after West Ham fans attack | The Sun](https://www.thesun.co.uk/wp-content/uploads/2023/05/supporters-attack-relatives-west-ham-818572904-2.jpg)
Inside AZ Alkmaar 'Ben Side Ultras' firm and their bloody history of stabbings & pipe bombs after West Ham fans attack | The Sun
![West Ham fans condemn 'significant failings' of police in face of 'pre-planned' AZ Alkmaar attack | Evening Standard West Ham fans condemn 'significant failings' of police in face of 'pre-planned' AZ Alkmaar attack | Evening Standard](https://static.standard.co.uk/2023/05/19/10/AFP_33FJ4M3.jpg?width=1200&height=900&fit=crop)
West Ham fans condemn 'significant failings' of police in face of 'pre-planned' AZ Alkmaar attack | Evening Standard
![Shocking scenes as West Ham fans are ATTACKED by a group of hooded AZ Alkmaar supporters | Daily Mail Online Shocking scenes as West Ham fans are ATTACKED by a group of hooded AZ Alkmaar supporters | Daily Mail Online](https://i.dailymail.co.uk/1s/2023/05/19/07/71169533-0-image-a-14_1684477719084.jpg)
Shocking scenes as West Ham fans are ATTACKED by a group of hooded AZ Alkmaar supporters | Daily Mail Online
![Brugge, Belgium. 22nd July, 2023. BRUGGE, BELGIUM - JULY 22: Djordje Mihailovic of AZ Alkmaar applauds for the fans after the Pre-Season Friendly match between Club Brugge KV and AZ Alkmaar at Brugge, Belgium. 22nd July, 2023. BRUGGE, BELGIUM - JULY 22: Djordje Mihailovic of AZ Alkmaar applauds for the fans after the Pre-Season Friendly match between Club Brugge KV and AZ Alkmaar at](https://c8.alamy.com/comp/2RDR206/brugge-belgium-22nd-july-2023-brugge-belgium-july-22-djordje-mihailovic-of-az-alkmaar-applauds-for-the-fans-after-the-pre-season-friendly-match-between-club-brugge-kv-and-az-alkmaar-at-the-jan-breydelstadion-on-july-22-2023-in-brugge-belgium-photo-by-joris-verwijst-orange-pictures-credit-orange-pics-bvalamy-live-news-2RDR206.jpg)
Brugge, Belgium. 22nd July, 2023. BRUGGE, BELGIUM - JULY 22: Djordje Mihailovic of AZ Alkmaar applauds for the fans after the Pre-Season Friendly match between Club Brugge KV and AZ Alkmaar at
![Brugge, Belgium. 22nd July, 2023. BRUGGE, BELGIUM - JULY 22: Mexx Meerdink of AZ Alkmaar applauds for the fans after the Pre-Season Friendly match between Club Brugge KV and AZ Alkmaar at Brugge, Belgium. 22nd July, 2023. BRUGGE, BELGIUM - JULY 22: Mexx Meerdink of AZ Alkmaar applauds for the fans after the Pre-Season Friendly match between Club Brugge KV and AZ Alkmaar at](https://c8.alamy.com/comp/2RDR1YT/brugge-belgium-22nd-july-2023-brugge-belgium-july-22-mexx-meerdink-of-az-alkmaar-applauds-for-the-fans-after-the-pre-season-friendly-match-between-club-brugge-kv-and-az-alkmaar-at-the-jan-breydelstadion-on-july-22-2023-in-brugge-belgium-photo-by-joris-verwijst-orange-pictures-credit-orange-pics-bvalamy-live-news-2RDR1YT.jpg)
Brugge, Belgium. 22nd July, 2023. BRUGGE, BELGIUM - JULY 22: Mexx Meerdink of AZ Alkmaar applauds for the fans after the Pre-Season Friendly match between Club Brugge KV and AZ Alkmaar at
![BRUGGE, BELGIUM - JULY 22: fans of Club Brugge with a flag supporting their goalkeeper during the Pre-Season Friendly match between Club Brugge KV and AZ Alkmaar at the Jan Breydelstadion on BRUGGE, BELGIUM - JULY 22: fans of Club Brugge with a flag supporting their goalkeeper during the Pre-Season Friendly match between Club Brugge KV and AZ Alkmaar at the Jan Breydelstadion on](https://c8.alamy.com/comp/2RDM3W5/brugge-belgium-july-22-fans-of-club-brugge-with-a-flag-supporting-their-goalkeeper-during-the-pre-season-friendly-match-between-club-brugge-kv-and-az-alkmaar-at-the-jan-breydelstadion-on-july-22-2023-in-brugge-belgium-photo-by-joris-verwijst-orange-pictures-credit-orange-pics-bvalamy-live-news-2RDM3W5.jpg)