India, Feb. 6 -- A day after three minor half-sisters jumped to their deaths from their apartment in Ghaziabad, their father alleged that in the hours before the incident, the girls had demanded that he take them to South Korea and told him that if they were not sent there, they "would die".

Ghaziabad police, meanwhile, said they are questioning family members and verifying a series of claims made by the family to media outlets in the immediate aftermath of the incident, particularly allegations linking the deaths to so-called "online task-based games".

The three sisters, aged 11, 14 and 16, allegedly jumped from their ninth-floor flat around 2am on Wednesday.

Soon after the deaths, the father told police and several media organisation...