I refer to Karen Carkeek's letter headlined 'Criminal act' (South China Morning Post, March 20), concerning barbecue remnants at Sea View Promenade, Repulse Bay. An investigation by staff of the Food and Environmental Hygiene Department on March 21, revealed that the designated barbecue site next to the Promenade was closed for renovation. As a result, some people had chosen to have barbecues at the rocky shore along the promenade, leaving behind a small amount of waste along the seashore. A special operation was conducted on the same day to clean up the area. Our staff will continue to closely monitor the situation. In fact, our department provides daily sweeping services to the promenade and carries out regular joint clean-up operations with the Marine Department along the rocky shore. We have also contacted the police for follow-up action. KO TIN-FOOK District Environmental Health Superintendent (Southern) Food and Environmental Hygiene Department