A Dalit woman in Bihar's Buxar district was allegedly gang raped and her child died after they were attacked and thrown in a canal, police said. The five-year-old child died from drowning, officials have said, adding that one of the seven accused has been arrested in the case. Of the seven accused, only two have been identified so far. The survivor has been admitted to a hospital in the district, about 135 km from Patna, for treatment.