FBI agents executed a search warrant at an Allegany County home last week while investigating the death of a former exotic dancer who was going to testify as a prosecution witness at the trial of strip club owner Peter Gerace Jr. Crystal Quinn, 37, died Aug. 1 in a home on Scott Avenue in the village of Wellsville, roughly 85 miles southeast of Buffalo. A team of FBI agents searched the home for evidence on Aug. 8. “The cause of death has not yet been determined,” Dylan Foust, an Allegany County coroner, told The Buffalo News on Thursday. “The investigation is continuing.”