Fans found with pyrotechnics at this weekend’s play-off finals could be arrested and even JAILED.
Mail Sport understands police swooped on a number of supporters following issues at the FA Cup Final earlier this month when Crystal Palace fans let off flares ahead of their victory over Manchester City.
And additional bag searches and patrols with specially-trained sniffer dogs will be deployed ahead of a huge weekend under the arch which kicks off when Sunderland face Sheffield United for a place in the Premier League on Saturday.