Police were called to the Westfalenstadion during Borussia Dortmund's tie with Hoffenheim on Saturday when a suspicious item was found near the bike shed area, according to German news site WDR Aktuelle Stunde.
The item was spotted about an hour into the game, and the German police tweeted out, telling people to avoid the bike shed area for at least half an hour whilst it was investigated.
After the bike shed went under lockdown, the police confirmed the item to simply be a misplaced rucksack - with many stadium announcements ignored in regard to the bag.
This scare comes only a few weeks after the April attack that the Borussia Dortmund team bus suffered before their Champions League match against Monaco.
Defender Marc Bartra was hospitalised after being hit with a piece of shrapnel, and a nearby police officer escorting the bus also suffered trauma from the blast.
The attack was said to be set off by two bombs planted in a nearby bush - with the trigger being detonated by a nearby pedestrian who was waiting for the bus to move into position.
A letter was later found that claimed responsibility for the explosions and 'suspicious objects' were also found near the hotel that the players were staying in.
Afterwards, Bartra posted on his social media accounts revealing that he was okay and on the road to recovery.