Authorities say they still don't know what caused several dozen children and adults to fall ill Friday at a Bethlehem, Pa., charter school.
The Allentown Morning Call reports that tests of the air at Lehigh Valley Academy Regional Charter School turned up nothing to explain what affected 48 children and adults
Chief Scott Van Why of the Hanover Township Volunteer Fire Department said firefighters found nothing detectable and released the building back to school officials. They recommended that the school hire a third party to come in and do an air-quality test before bringing students and staff back.
Emergency responders were sent to the school Friday after nearly a dozen people were reported sick in one of the three buildings. Officials said that building, which houses seventh- through twelfth-grade students, was evacuated out of an abundance of caution.