Three people have been rescued after a house collapsed amid a fire and explosion in Croydon.
Firefighters were called to the scene on Galpin’s Road in Thornton Heath shortly after 7am on Monday.
Residents told the PA news agency that three children had been evacuated but feared a fourth was still trapped inside.
A spokesman for the London Ambulance Service said four people had been treated and three patients had been taken to hospital.
‘We treated four patients in one incident at Galpins Road, Thornton Heath,’ they said. “One of them was sent back to the scene and three others were taken to hospital.
“We remain on site with our colleagues from the emergency services.”
London Fire Brigade (LFB) said the cause of the fire and explosion was not known.
Dozens of worried neighbors gathered near a police cordon shortly after the explosion.
Several people, who had been evacuated in their pajamas, told the PA news agency that their windows had been shattered early Monday morning by the force of the blast.
Two neighbours, Kutoya Kukanda, 50, and Delroy Simms, 62, said they helped rescue three children from the rubble around 7 a.m., but they feared a girl aged around four or five was still trapped inside.
They added that they believed the children’s mother had been evacuated and the house next door had also been badly affected by the blast.
Many said they reported a strong smell of gas two weeks ago, and others said they had felt dizzy and sick in the past two days.
Six fire trucks and around 40 firefighters were dispatched to the scene where the terraced house collapsed.
The LFB said it had taken 14 calls to the incident since 7:08 a.m.
Fire crews from Norbury, Mitcham, West Norwood, Woodside and surrounding fire stations were dispatched to the scene.
A statement from the brigade said: “A terraced house collapsed following an explosion and nearby properties were also damaged. Three people were rescued.
The Metropolitan Police confirmed officers were also at the scene.
A statement on Twitter said: “Officers are at the scene in Galpin’s Road as part of the emergency services response to this incident. Please follow @LondonFire for updates.
The London Ambulance Service said it was also responding to the incident.