Three siblings found dead in a house in the French region of Burgundy may have been murdered by their mother, prosecutors said on Saturday. The brothers, twins aged 18 months and their 6-year-old sibling, were found by a family friend in Gergy, a town of 2,500 people located about 350 kilometres south-east of Paris. The mother was found near the children on the floor "under the influence of medication" and was taken to hospital. She was going through a separation and had moved to the town a few months ago, a neighbor told the AFP news agency.