An investigation has begun into the cause of the fire which killed two women and three children Sharrow, Sheffield.
The blaze broke out shortly after midnight in Wake Road, according to investigators at the scene.
Following a flurry of emergency calls, four fire engines from Central, Rivelin, Lowedges and Mansfield Road rushed to the scene along with the police and ambulance services.
South Yorkshire Fire Service, which received a 999 call at about 00:15, said: "Five people have sadly died following a serious house fire on Wake Road, Sharrow, Sheffield. The people who died are believed to be two adult females and three young children.
"An investigation has commenced, involving police and fire officers, to establish the cause of the fire."