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GERMAN police have arrested a warped cell of four teenage terror suspects planning an ISIS rampage with knives and molotov cocktails.
It comes as security officials prepare for a possible ISIS attack on the Euro games in Germany this summer.
Four young boys and girls were arrested near Dusseldorf by police after they discovered the group's horrific plans, Bild reports.
Investigators were appalled to find the teens, aged just 15-16, were in possession of a machete and dagger and were texting on a group chat about attacking German cities.
Just days ago ISIS issued a disturbing threat to the Champions League matches held in London, Madrid and Paris.
It's warped PR arm sent out a poster which read "kill them all", sparking major security operations at each stadium.
A mammoth security operation was launched across Europe with armed cops, prowling bomb dogs and elite anti-terror units.
While the games went ahead without a hitch, security officials in Germany have now been placed on high alert ahead of this summer's major championship games.
ISIS magazine Voice of Khorasan released a particularly disturbing issue filled with calls to action for extremists around the world.
German officials believe they were directed at the upcoming UEFA tournament, Bild reports.
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Chilling graphics inside the publication included one of a terrorist holding a gun, kitted out in camouflage gear and poised to exit a German train.
Next to him are signs that read: "Welcome to Europe" and "Last call before exit".
On the seat in front of him is a box of explosives.
SITE Intelligence, which monitors global terrorist activity, also reported a pro-ISIS cell calling for drone strikes on the Champions League stadiums this week.
An ISIS graphic showed a drone flying over the Madrid stadium with the caption: "If they constrict and oppress you on the ground, then strike them from the sky".
Text in the terrifying magazine reads: "Run over the kuffar (non-believers) with your vehicle, stab them with knives, fill their food with poison, blow out their brains with bullets, and set their houses on fire."
German officials believe ISIS-K, who carried out Europe's deadliest Islamic extremist attack in Moscow just weeks ago, have a significant presence in Europe.
They reportedly have a network of more than 100 agents in western Europe with 50 in Germany alone.
One security official told Bild: "(This propaganda piece) shows that the ISPK absolutely wants to carry out sensational attacks, no matter how and by whom.
"To this end, all potential attackers, including self-radicalised individual perpetrators, so-called lone wolves, are now being called upon to carry out attacks."
Some of the recent ISIS messaging has been aimed at young people in particular - like those in Germany this week.
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Dortmund, Dusseldorf and Cologne were all floated as possible locations for the disturbing teen attack but no ironclad plan came of it before their arrest.
The current terror threat level in Germany assumes an attack is "very likely".