El Diario is reporting that Plácido Domingo performed with the leaders of the Escuela de Yoga 26 years ago.

According to the report, the tenor performed a concert on Feb. 20, 1996 at the Campo Argentino de Polo in Buenos Aires and performed “Cartas marcadas” by composer Susana Mendelievich, a leader of the group known as Mendy. During that concert, violinist Rubén D’Artagnan González,  a concertmaster with the Chicago Symphony Orchestra from 1986 until 1996, also performed and is presumed to have conducted business for the sect in Chicago. The close of the concert also featured Verónica ‘Loia’ Iácono, who was debuting as a lyric singer and is now a fugitive in the United States.

The sect exploited at least seven women who were incorporated into the coercive organization by their families when they were still children or adolescents. At this time, Susana Mendelievich, who is 75-years-old, and Juan Percowicz, who is 84-years-old, the community leader have been arrested.

An investigator told the Associated Press that Domingo has not committed a crime nor was he part of the organization, but rather a consumer of prostitution.

The news comes after audiotapes were captured by law enforcement during a raid that dismantled the organization. The audiotapes featured Domingo making a deal with “Mendy” and later the woman speaking with Percowicz celebrating her recent negotiation. The phone calls appeared to be wiretapped.

Domingo has yet to issue a statement and is still set to perform on August 19 in Monterrey.