The victims of a house fire in North Wingfield, Derbyshire, have been named by police as Claire James, 27, Josie Leighton, 32, Tyler Green, 9, and Jordan Green, 12.
Derbyshire Police say Claire James and Josie Leighton died at the scene. The boys - Tyler and Jordan - were later pronounced dead at hospital.
A seven-year-old girl was taken to hospital following the fire, suffering from minor smoke inhalation. Police say she has since been discharged.
A joint investigation by the police and fire service continues.
More top news
Police appeal for information after father and two young children go missing from Kent home.
A father has been sentenced to life in prison after being convicted of intentionally leaving his toddler son to die in a hot car.
Theresa May has refused to rule out paying money to the EU after we leave, so that UK firms can still trade with the single market.