Police are seeking the help of football fans in tackling terrorism and are asking them to be vigilant at matches.
Officers say stadiums could be targeted as extremists seek out crowded places to attack.
Chief Superintendent Nick Aldworth said: “We know from what we’ve seen on the ground, and also from terrorist rhetoric, that they are interested in attacking crowded places generally, and that would include stadia.
“We want (fans) to think about what they might do in the event of an attack and we want them to be really, really vigilant.
Source: Sky News
To report an imminent threat call 999 or ring the Anti-Terrorist Hotline on 0800 789 321.