Police officers arrived at the church shortly after 7:30 p.m., and are making inquiries.
The concert was the latest in a series meant to raise money for the financially troubled opera company, which has already made significant cutbacks and layoffs. The company will not perform in Scotland in the 2005-06 season, a hiatus imposed as part of a Ô£7 million bailout deal with the Scottish Executive. The possibility remains that the company will tour in England during its dark period.