The police measured the total decibels of her concert Taylor Swift at Real Madrid’s Bernabeu stadium as citizens complain about unbearable noise after the stadium started hosting music events last month.

The readings need to be evaluated to see if they exceeded the permissible limits, municipal spokeswoman Inmaculada Santh said during a press conference today. The official said authorities received 25 complaints after yesterday’s concert.

According to her, the municipal authority is already preparing fines for the organizers of previous concerts, which were judged to have exceeded the noise limits.

Real Madrid declined to comment. Madrid’s municipal police referred requests for comment to city hall. Santh did not release the decibel readings during the press conference.

Lastur Bookin SL, the organizer of Taylor Swift’s concerts in Madrid, has not yet responded to a request for comment.

The concert, attended by tens of thousands of her fans, known as “Swifties”, was the first performance by a world-class artist at the stadium, which was adapted to meet president Florentino Perez’s vision to expand the club’s income beyond football , with the aim of Real Madrid being able to compete financially with the English teams in the Premier League.

However, the plan is taking place against local anger over noise levels, with residents saying they will take legal action to prevent future events.

“We have no choice but to take legal action,” said Enrique Martinez de Azagra, president of the Association of Citizens Affected by the Bernabeu.

During yesterday’s concert, experts hired by the association took their own decibel measurements, which can be used as evidence in a case. Experts recorded readings of 80 decibels, well above the 53 allowed by the municipal authority for a concert venue, Martinez de Azagra said.