All four children were related.

Four young children have tragically died in a house fire in London. The fire broke out at a house in Sutton shortly after 7 pm on Thursday, December 16th. London Fire Brigade and the police attended the scene on Collingwood Road, Sutton. Eight fire engines and 60 firefighters tackled the blaze. The entire ground floor of the house was on fire. The fire was extinguished and the four children, two sets of twins, were recovered from the building. The children were treated at the scene before being rushed to two south London hospitals. However, all four children were sadly pronounced dead a short time later. Sky News reports that a 27-year-old woman has since been arrested on suspicion of child neglect. London Fire Brigade confirmed, "All four children were removed to hospital where, tragically and despite the efforts of all involved, they were pronounced deceased." https://twitter.com/LondonFire/status/1471615349422538758 Metropolitan Police confirmed, "Next of kin are aware and will be provided with specialist support." Superintendent Rob Shepherd extended his thoughts to the loved ones of the four children. "They have suffered such a devastating and tragic loss tonight." He continued, "I know these sentiments will be shared by the local community, Sutton and London as a whole." "We remain on scene with our emergency service colleagues and will be working through the night and beyond. At this very early stage, the cause of the fire is unknown and will be investigated." London Fire Commissioner Andy Roe also expressed his sympathy. "This is an incident that has left everyone numb with profound sadness. My thoughts are with the family and friends of the children, the whole local community, and all those who will be affected by this fire."