Taxi driver Aaron Mohammed, has been talking to ITV reporter Adam Fowler about what he saw when he arrived at the scene of the house fire in Sharrow in Sheffield.
A nine-week-old baby was one of five people killed in a house fire in Sheffield, along with two women and two other children.
A cousin of one of the women said the other two children were aged nine and seven.
He said the two women who died were his 54-year-old cousin and her 20-year-old daughter - the children's aunt.
The cousin of one of the women who died in a house fire in Sharrow in Sheffield has said the whole community is in shock.
– House fire victim's cousin
"They were such a lovely family, highly respected. Quite an industrious family who had everything going. This tragedy has struck and we have to try our level best to pull through this."
The cousin of one of the women who died in a house fire in Sheffield has expressed his grief over the incident, calling it a "tragedy".
– Cousin of one of the victims
It's just a huge tragedy. Words cannot describe how sad this is.
It's a tragedy beyond description.
Humberside Fire and Rescue Service has tweeted its "thoughts and prayers" for the families of the five people, including three children, who lost their lives in a house fire in Sheffield.
Shocking news of the five people who lost their lives in a Sheffield house fire overnight. Thoughts and prayers with the families. @syfr
Investigations are underway into the cause of a fire at a house in Sheffield where five people died. The blaze broke out in Sharrow early this morning. It is believed two adult females and three young children died in the fire.
The house fire that left two women and three children dead was "severe", a spokesman for South Yorkshire Fire and Rescue said.
He said: "Our investigators are arriving here at 9am, so we we will know more later on this morning."
Police are investigating the causes of a house fire in Sheffield that claimed the lives of two women and three children during the early hours of Monday morning.
A police spokesperson said the damaged building was believed to be a terraced house, and that "at this stage we are not able to confirm where in the house the fire broke out or if anyone else was injured".
South Yorkshire Fire Service have issued a statement about the house fire in Sheffield which has claimed the lives of five people, including three children.
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.
Four fire engines- from Central, Rivelin, Lowedges and Mansfield Road stations- plus an aerial ladder platform dealt with the incident alongside the police and ambulance services, after a 999 call was received at around 12.15am. An investigation has commenced, involving police and fire officers, to establish the cause of the fire.
South Yorkshire Fire Service have confirmed that five people have died following a house fire in Sheffield.