As shown through videos shared on social media platform X, a group of Borussia Dortmund fans launched fireworks outside the hotel that FC Barcelona players will be staying in over the next coople of days, amid the two teams facing off in an important Champions League league phase fixture.
Barca and Dortmund are currently sixth and seventh respectively in the league phase table, and can each rise as high as second behind Liverpool through a win at the Westfalenstadion with bumper prize money on the line.
Speaking ahead of the vital fixture, Barca head coach Hansi Flick said that he knows this won't be an easy task in what is a "fantastic" but "very complicated" stadium with an "amazing atmosphere".
"We really like to play in this type of atmosphere. We have to take advantage of it. It gives the team extra motivation," Flick added at a prematch press conference on Tuesday evening in Europe, ahead of him and his players' sleep being disrupted in the early hours of the early morning.
That is because according to Mundo Deportivo, a group of Dortmund fans congregated outside Barca's hotel in the home team's local area and treated the visitors to a "pyrotechnic festival that lasted for about two minutes, with firecrackers and rockets that were intended to interrupt their rest".
The disturbance reportedly occurred at around 00.20 local time, and we'll now see if it has any effect on the performance of a Barca side that currently tops La Liga but is in a slump after a difficult November peppered with two defeats and a draw.
Barca not only has to beat a side that has won eight of its nine home games since the start of the season and hasn't lost in its fortress since last April, while also reaching the UCL final it lost to the Blaugrana's bitter rival Real Madrid at Wembley.
It also has to do so in fever pitch conditions, with Dortmund's famous "Yellow Wall" behind one of the goals guaranteed to be loud and sing from the opening whistle to the very last.