At least 21 bodies, including those of the Indo-Tibetan Border Police (ITBP) and the Border Roads Organisation (BRO) personnel, have so far been found while eight persons are still missing due to flash flood and landslides in remote areas of North Sikkim, official sources said on Sunday. The dead include four from the ITBP, two of their family members, and 12 junior officers from the BRO. Other victims were casual labourers, officials said. Most of the casualties are reported from Rangma range. Landslides were caused by heavy rains since September 19, deputy commissioner north district T W Khangsherpa said.