A pair of visiting fans were ejected from the stands for lewd conduct on Saturday after twice being found engaging in intercourse
Within 16 minutes of the opening kick-off, a couple watching from the Bayern section were photographed having sex in the stands.
"I thought it did not look right," a reader-reporter told Bild. "They had absolutely no inhibitions. Both pulled their pants down and went at it.
"The people around them apparently were not disturbed."
It did not take long, however, for arena staff to intervene.
"The ushers noticed the commotion and urged the two to stop immediately."
The couple co-operated at first but resumed their exhibition at the half-time interval and were ejected from the stadium under threat of arrest for public indecency.