The arrests followed the circulation of a video showing the girl carrying two dozen beer cans and a damaged schoolbag. She reportedly declined offers of help, stating she feared her father would scold her. The father later appeared, criticized his daughter, and took a bag from her.

Police received a report on Tuesday evening and initially believed the girl had picked up the beer voluntarily. However, the case was reclassified the following afternoon and taken over by the New Territories North Child Abuse Investigation Unit, which initiated a probe and involved the Social Welfare Department.

The parents told local media that the incident was a "misunderstanding" and denied child abuse, claiming the beer-carrying was a motor skills exercise for their daughter, who has a condition affecting physical coordination. They stated all three of their children have special needs and that services in Tuen Mun District are insufficient.