Police are investigating a ‘suspicious item’ at Borussia Dortmund’s Signal Iduna Park, during their Bundesliga clash with Hoffenheim.
The German side were an hour into their match at the Westfalenstadion, with independent law enforcement agency the LKA also involved, according to reports from WDR Aktuelle Stunde.
The game went ahead as planned, with Marcos Reus opening the scoring inside the opening minutes in Dortmund’s bid to leapfrog their opponents into third in the Bundesliga.
The incident becomes the second major scare for Dortmund in the past few weeks, after their team bus was attacked en route to their game against Monaco.
Dortmund star Marc Bartra was hospitalised after an explosion near the Signal Iduna Park stadium last month.
That evening, an explosion shattered the club’s team bus window, with three “bombs planted in a roadside hedge”.
Police found a letter claiming responsibility for the attack - which saw the match postponed - as “suspicious objects” were later found near the player’s hotel.
Bartra, 26, was taken to hospital following the blasts which blew out windows in the coach.
The Spanish defender is to undergo surgery on his injured arm to repair a fracture and remove shrapnel.
A police officer on a motorcycle was also injured.
He had been escorting the team bus and suffered trauma from the noise of the blasts.
It's believed an attacker was "watching and waiting" to set off the explosives, which were intended for the team.
As the explosives were detonated when the bus passed, it is possible an attacker used a mobile phone or a remote garage door-opening device.