The mother who died with her three children in a horror house fire was pregnant, according to neighbours. The 43-year-old, a 15-year-old girl, and two boys - aged eight and four - were found dead at the family home after the blaze ripped through their home in Tillett Close in Stonebridge, north west London yesterday (May 24).

A man, 41, was arrested on suspicion of murder in the early hours outside the houses. He was still in custody on Saturday. Neighbours reportedly described them as a "nice family", with one, who hasn't been named, telling MailOnline the woman was expecting another child.

On Sunday morning, the road outside the terraced houses remained cordoned off, with two fire engines still at the scene.

Bunches of flowers and a blue teddy bear were left near to the homes and crews wearing helmets and respiratory equipment were seen building scaffolding against the burnt out buildings.

Neighbours said the family had lived in Tillett Close, in the Brent area of North West London, for a long time.

Firefighters said the mother and one of her children were rescued from the second floor, but they were declared dead by air ambulance crews.

The other two children who were declared dead were found inside the property as crews tackled the blaze, according to London Fire Brigade (LFB).

Scotland Yard said a woman in her 70s and a teenage girl who were both members of the family were taken to hospital by the London Ambulance Service (LAS). There has been no update on their condition.

Neighbour Cecilia Marquis, 60, said she was "stunned by the devastation" of the blaze. Ms Marquis, who is a caterer at Brentford FC and witnessed the fire in her street, said: "This will leave a devastating impact."

In a statement on Saturday, Supt Steve Allen from the Met Police's local policing team in north-west London, said detectives were leading the ongoing investigation into the cause of the fire.

He said: "Despite the efforts of the emergency services, I can confirm a woman and three of her children died at the scene.

"A further two members of the same family were taken to hospital and continue to receive treatment.

"The wider family have been informed, and officers will continue to support them at this incredibly difficult time."

He added: "I recognise the significant impact this incident has had on the community."