A letter containing a white powdery substance arrived on the campus of HISD's Franklin Elementary School through the US mail. Testing on the envelope and the powdery substance revealed that the substance did not pose a threat to students or staff. No students are believed to have come into contact with the substance.
When the letter was opened, campus staff immediately notified law enforcement and a Houston Fire Department hazardous materials crew was dispatched to the school. The main office was temporarily quarantined and the air conditioning system was turned off. Instruction returned to normal after officials removed the letter from campus.
Parents have been notified of the incident.