Terrified neighbours described the harrowing moment they saw someone jump out the window "engulfed in flames" when an explosion near their home caused two people to be seriously injured.
Residents in Illingworth, West Yorkshire, said they thought there had been an "earthquake" near their home when a house collapsed following an explosion that could be heard three miles away.
Police said a woman was taken to hospital with severe burn injuries as was a man who suffered serious injuries. Another female received minor injuries in the incident.
Local resident and mum-of-two Candice Nevison, 37, said she thought her own house had collapsed for how loud the bang on Green Lane was.
She described how one person jumped out their window "engulfed in flames" following the explosion at around 7:45 on Saturday.
Another person ran out of the burning building, said Ms Nevison, whose own mother was among those safely evacuated.
"It sounded like there was a massive bang and it felt like something had fallen on my head," she said.
"The impact was just so extreme I thought my own house was collapsing.
"I was terrified because it was so loud and my mum lived right on that street.
"I looked out and there was a massive fire.
"Thankfully my mum was evacuated as one of the six homes and she's okay."
She added: "I saw people running out the house at around 7.45am.
"I saw one person jump out the window while another person carried an old lady over her shoulder.
"You just don't expect anything like this to happen.
"I've never seen or heard anything like it before."
Another neighbour described the massive blast as "surreal".
He was told that three people in the property were taken to hospital with burns.
Colin Stone, 56, said: "I just got out because I thought my house had exploded.
"The whole street thought so - it was surreal.
"We were told by fire marshalls that they got taken to hospital with burns, I hope they're okay."
West Yorkshire Fire and Rescue service manager Benjy Bush said they were not ruling out the possibility that a gas leak may have caused the explosion.
But he said it was too early to determine and efforts were focused on securing the area after "extensive and significant damage" caused by the blast and subsequent fire.
More than 30 firefighters along with four fire engines, support and specialist teams attended the scene.
Mr Bush said that an elderly lady as well as two others who were in the house were being looked after by a neighbour after they escaped from the collapsing building when they arrived.
The extent of their injuries is still unknown, but they are currently recovering in hospital.
Mr Bush added: "We don't know yet what caused the fire.
"We were called to reports of an explosion and sent four fire engines which is our standard protocol.
"There was extensive and significant damage to the building when we arrived."
Chief Superintendent Sarah Baker of West Yorkshire Police, said: “The cause of the fire is currently under investigation and efforts remain underway to make the area safe and support residents affected by what has taken place.”