Father Judge High School reopened today as officials remain in the dark about the cause of the ailment that sent scores of people to hospitals after a weekend cheerleading competition at the school.

The decision to reopen came Wednesday after a series of tests by the Fire Department, city Health Department and a private contractor hired by the Archdiocese found no toxic substances in the school building in Holmesburg.

The tests, however, shed no light on what might have caused 150 people who attended the cheerleading event Sunday to go to hospitals starting early Monday for treatment of burning eyes and related complaints.

The investigation is continuing.