The Spanish Health Ministry has confirmed that the Teatro Real in Madrid experienced a COVID-19 outbreak.

The ministry confirmed that the 24 artists participating in the upcoming “Peter Grimes” production tested positive for COVID-19 during rehearsals.

The Heath’s ministry noted that while the outbreak on March 15 has been confirmed, there is an ongoing investigation.

The Teatro Real has released a statement denying that there was an outbreak in the theater and that any positive tests have been isolated cases caused by personal or familial gatherings. The theater also noted in a press release that rehearsals are currently being held as scheduled in anticipation of the April 19 opening.

“Peter Grimes” is set to open on April 19 and will star tenor Allan Clayton in the title role, Maria Bengtsson, Christopher Purves, and Catherine Wyn-Rogers. Andrés Máspero conducts.