VIOLENT scenes have been witnessed as West Ham and AZ Alkmaar supporters conflict forward of their Europa Convention League semi-final decider. Rival teams have been seen chasing one another on the streets of Holland. Movies on Twitter revealed massive crowds of followers sprinting by way of the streets with chairs. The environment has been described as “grim” by native information retailers as footie followers in hoodies instigated fights. In a single video, an individual is seen being attacked with what seems to be a bicycle. West Ham followers have been caught up within the combine when AZ Alkmaar and FC Groningen followers clashed. AZ Alkmaar supporters tried to disrupt the semi-final by setting off fireworks exterior West Ham’s staff lodge, with one fan being hit by a stray rocket. West Ham performed and received the primary leg of the semi-final at house. They’ve named their strongest attainable lineup for the second leg on the AFAS Stadion Stadium. The stadium holds almost 19,500 followers, with 5,000 anticipated to be in attendance for West Ham. Andy Carroll was seen in a clip posted on Twitter, singing with followers close to the stadium. Within the hopes of reaching their first European ultimate in 47 years, West Ham will play towards AZ Alkmaar on the AFAS Stadion Stadium tonight.