Whether, following an unknown suspected gas leak and inhalation at a school and homes in the surrounding area of Richards Bay, where children as well as adults developed nausea, vomiting, difficulties in breathing with many having collapsed and transported to hospitals and clinics in the Richards Bay and Empangeni areas, his department has investigated the incident; if not, why not; if so, what (a) are the results of the investigation and (b) is being done to prevent the incident from happening in the future?