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Five family members have been found dead and two children were hospitalised after being poisoned on a farm near Bothaville in the Free State.
Police Captain Stephen Thakeng says a man, two two children, the wife and her sister were found lying in the house after a neighbour alerted police about their non-stop vomiting.
Poison was found inside pots containing food.
The mother and father apparently had a fight on Friday when the 30-year-old man wanted to sleep with his wife's 16-year-old sister.
