FEARS of Euros aggro at England’s opening game soared yesterday after 8,000 Serbian fans tried to storm their own team's training session in Germany.
Flares were hurled at police forced to tackle a pitch invasion at the Serbian team's base - four days before their curtain raiser clash with the Three Lions.
Trouble erupted as 8,000 pyro-wielding Serbs surrounded the Rosenau Stadium in Augsburg on Wednesday evening.
Clashes with security staff ensued as just 3,000 were allowed entry, with thousands more locked outside.
Inside the stadium one young fan was led away by officers after he tried to get onto the pitch as the Serbian team were put through their paces.
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His arrest sparked a chorus of angry boos and a banned flare was thrown towards police, landing on the running track just yards from the players.
Such scenes are unheard of at tournament training sessions - and revealed the fanatical fervour of Serbian supporters amid fears of clashes with English rivals.
The training session continued but ended soon after the incident as police restored order.
German cops fear up to 500 Serbian Ultra hooligans could trigger mayhem at England's first Euro 2024 match in Gelsenkirchen on Sunday - and have designed the game “high risk”.
Police have banned strong booze and forced 62,000 fans to drink only shandy or low alcohol beer at Veltins Arena.
Security has also been beefed up with around 1,000 police drafted in to keep order amid concerns of clashes in unsegregated seating inside the stadium.
It is understood British police "spotters" and plain-clothed officers will also be on hand to watch England fans at every match.
German police are most worried about hard core Serb Ultras including many who support Russian tyrant Vladimir Putin.
One Serbian fan said: “On the pitch you will probably win but off the pitch it’s not a contest. We aren’t afraid of anyone.
“We learned everything we know from the Italians and the English but they are no match for strong Serbian men.”
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Serbian ultra groups, such as Headhunters and Gravediggers, are among the most feared football fans in Europe.
Their most notorious soccer savage has been named as Ivan 'the Terrible’ Bogdanov - a tattooed hardman known to have terrorised players.
Ahead of a Euros 2012 qualifier in Genoa, Italy, Serbian fans attacked their own team’s bus, with Bogdanov among those who made it inside.
He was alleged to have confronted goalkeeper Vladimir Stojkovicfor for committing the unforgivable crime of switching from Bogdanov’s team, Red Star Belgrade to rival club Partizan.
The game was later abandoned due to the trouble, Italy awarded a 3-0 win and Bogdanov - branded with his new nickname 'the Beast of Genoa’ - jailed for his role in the riot.
ENGLAND'S PAST TOURNAMENT CHAOS
Travelling Three Lions supporters have forged a poor reputation for their behaviour overseas through the years.
However, England fans have been the target of several international assaults in the past both at club level and for national fans.
The 2016 Euros in France was viewed as a major failure for England both on the pitch and off it due to fan violence.
Before the tournament had even begun, fighting broke out between England fans and rival supporters in Marseille with cops being forced to tear gas local youths.
And after England drew with Russia on June 11, major clashes broke out on the streets of the French city between the two countries.
Over 100 Three Lions fans were left "walking wounded" with some in a critical condition after barbaric attacks that saw Russian thugs stalk drunken fans outside of pubs and bars.
The Russian team was given a suspended disqualification as a team and fined €150,000 (£126,000).
The hooligans were branded "hyper-rapid and hyper-violent" by the chief prosecutor in Marseille for their heinous planned assaults eight years ago.
More violence then erupted between English and Russian fans in Lille a few days later.
At least 40 fans were reportedly arrested, 50 Russians deported and dozens left injured after the clashes.
One was even left in a critical condition in the hospital following a Russian ambush.
