Overview

• Manchester United has launched an investigation after Rangers fans obtained tickets in home sections during Thursday's Europa League match at Old Trafford.
• Violent clashes broke out between supporters, with videos showing physical altercations and bottles being thrown, forcing bystanders to flee.
• United has pledged the 'strongest possible sanctions' against ticket holders who sold their seats to away fans, despite strict measures to prevent such sales.
• Greater Manchester Police reported 39 arrests, primarily in the city center, as tensions between fans escalated before and after the match.
• The incident has drawn comparisons to previous security failures, including clashes involving Rangers fans in Manchester during the 2008 UEFA Cup final.