A 10-year-old boy plunged 16 floors to his death in a Wong Tai Sin public housing estate while being looked after by his grandmother. Police suspect Chan Wing-chun fell accidentally from his home on the 16th floor of Fu Tung House in Tung Tau Estate at about 3.30pm. His grandmother, 72, told police that she left her grandson playing in the living room when she went to the kitchen. When she returned she noticed a window open and looked out to see the boy lying on the street below. The boy was certified dead at the scene.