Manchester United's Europa League victory over Real Betis was marred by ugly scenes in the away end.
Betis supporters clashed with police in the closing stages of the last 16 first-leg tie, which United won 4-1. Police were forced to intervene as a section of the away end appeared to try and break into the home stands by climbing over the barriers.
The catalyst seemed to be United's fourth goal, scored by Wout Weghorst, which gives Erik ten Hag's side a commanding advantage in the tie. Riot police intervened in the away end to help quell the disorder.
