Hong Kong police are investigating an allegation that a four-year-old boy was indecently assaulted at an international school in Stanley, with the institution saying its security footage showed “no evidence of any wrongdoing” on the day of the suspected incident. A source said on Wednesday that the International Montessori School kindergarten pupil complained to his family that his buttocks were sore on April 17 after his mother picked him up from school. His father, who suspected that the child