Borussia Dortmund Confirm Fan Died of Heart Attack During Match vs. Mainz

Borussia Dortmund's 2-0 win over Mainz on Sunday was overshadowed by a tragic incident, as one fan died from a heart attack in the stands.

James Whaling of the Irish Mirror reported the news, while the club released a statement (in German) to confirm. 

The Signal Iduna Park fell silent once the news had spread, with both Dortmund and Mainz fans paying their respects. Per Bleacher Report's Lars Pollmann, the officials also understood the gravity of the situation:

Dortmund's official Twitter account also shared this video of the fans singing "You'll Never Walk Alone":

Sky Sports' Alex Chaffer shared this video from the stands, showing just how quiet the stadium fell:

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You could hear a pin drop... Desperately sad. #BVBM05 pic.twitter.com/6BCWXTY0xI

— Alex Chaffer (@AlexChaffer) March 13, 2016"

Fans and pundits on social media quickly pointed out football takes a back seat when tragic incidents like these happen, and Dortmund's Twitter account acknowledged that by expressing condolences their and saying: "There are more important things than football."

Mainz's Twitter account followed their example after the match:

Per Pollmann, the players seemed to know something had happened:

Bundesliga writer Cristian Nyari shared this photo taken after the match:

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Dortmund players stand together to observe moment of silence as supporters sing "You'll Never Walk Alone" pic.twitter.com/RRmx0KvTri

— Cristian Nyari (@CrisNyari) March 13, 2016"

Marco Reus and Shinji Kagawa scored the goals that ensured Dortmund kept pace with Bayern Munich in the Bundesliga standings, but on Sunday, the home fans at the Signal Iduna Park, who are among the most passionate in all of football, had other things on their minds.

Per Dortmund's statement, a second fan also suffered a heart attack, but the club later confirmed he is in stable condition, per Bundesliga writer Raphael Honigstein.