Post - mortem on the two deceased was conducted today ( september 2 ) . it was revealed that the 39 - year - old woman and her three - and - a - half - year - old son were died of multiple internal injuries 警方已于今日(九月二日)进行验尸,初步显示该名三十九岁女子及她的三岁半儿子死于严重内伤及骨折。