Sunil Sahu bitterly regrets the day his five-month-old son was given some cow milk diluted with tap water.
Avyan was being breast-fed but his father says the family - who live in Indore city in India's central Madhya Pradesh state - gave him the diluted mixture in addition.
In many Indian families, cow's milk is believed to be too thick for infants and capable of upsetting their digestion, leading caregivers to dilute it.
Aware that tap water is unsafe to drink, the family said they boiled the milk–water mixture and allowed it to cool before feeding Avyan.
The infant started suffering from diarrhoea on 26 December. Despite being treated by a local doctor, the child died within three days. Mr Sahu alleges that the tap water killed his son.
