One of the first people on the scene of today's gas explosion in Christchurch has spoken of the horror that they encountered.
The explosion destroyed one house on Marble Court, in the suburb of Northwood, and damaged several others. Six people have been injured and rushed to hospital - with injuries ranging from moderately serious to critical.
Bradley Culver was having a cup of coffee and watching the Open Championship golf on TV when the explosion happened.
The former police officer ran outside and saw a neighbour's house completely destroyed.
Several people were trapped in the debris of timber and mortar.
"The house where the explosion was - you wouldn't even recognise it as a house now. "I think there are definitely some injuries. They got them out [of the house] but it could be serious."
Newstalk ZB Christchurch host Chris Lynch said earlier that callers from across the city say they heard an explosion with some residents in Redwood saying their houses shook violently.
City councillor Aaron Keown is on the scene and he says the windows of the neighbour's house have completely blown out. He says a pre-school is 100 metres away and is going to check on children.
A worker at a nearby motel and holiday park said the explosion shook nearby homes and sounded like a bomb had gone off.
"It was more than an earthquake, you'd think a bomb had gone off."
She said insulation and small debris had fallen down from the sky on to her property.