Emergency services were called to reports of a fire at 6.10pm on Friday in the garden of a house in Heol Fawr, Nelson, Caerphilly, south Wales.
Neighbours describe seeing the two-storey property on fire after a reported explosion in the garden.
Gwent Police confirmed that police officers and firefighters from South Wales Fire and Rescue Service attended the scene.
A force spokesman said: “Two people have sadly been pronounced dead at the scene and their family has been informed.
“The incident is ongoing and the road is currently closed.


