Up to 87,000 festivalgoers have evacuated from Rock am Ring music festival held near Nürburg, Germany, after police received information of a “concrete” terrorist threat.

Together with a police officer, festival organizer Marek Lieberberg took to the main stage at around 9pm to ask fans to make their way towards the exit. In a statement on Facebook, the festival’s organizers urged all those attending to leave the site in a “calm and controlled manner” after being warned of a “terrorist threat.”

“We hope that the festival will continue tomorrow. Thank you for your cooperation,” the statement added.

Festival Rock am Ring terminated in the first evening because of a terror threat #dw_culturepic.twitter.com/My9S6imYQq — Rick Fulker (@rickfulker) June 2, 2017

Now we're being "encouraged" to leave by security @rar2017pic.twitter.com/VO93UDX5jt — Rick Fulker (@rickfulker) June 2, 2017

In a separate statement, local police said that “investigations are currently under way” regarding “concrete indications, which cannot exclude a possible terrorist threat.” In the wake of a recent attack at a music concert in Manchester, all precautions are being taken for the event, with 1,200 police officers already deployed at the scene.

In the process of evacuating 90,000 people from the Rock am Ring #Rar2017 field, everything is very calm pic.twitter.com/qEJJD7FIoV — Rick Fulker (@rickfulker) June 2, 2017

The Rock am Ring festival, which was due to run until Sunday, is an annual event held at the Nürburgring arena near the historic city of Nürburg focused mainly on rock and metal music. This year’s line-up was to feature 85 different bands over four stages, including Rammstein and System Of A Down.

In the past the biggest danger to fan’s health and lives was the weather – over 70 people were injured and 42 sent to hospital after the event was hit by lightening strikes last year. None of the injuries, however, were life-threatening. Last year Germany experienced its first major Islamist terrorist attack, when Islamic State (IS, formerly ISIS/ISIL) terrorist Anis Amri deliberately drove a truck into a Berlin Christmas market, killing 12 civilians.

Total disappointment. But many are staying here on the Rock an Ring facilities, feeling safer than on the camping areas pic.twitter.com/85YfgnvXEq — Rick Fulker (@rickfulker) June 2, 2017