A grain silo at the Champion Flour Mill in central Christchurch has collapsed onto a neighbouring car yard.
A man living across the road from the landmark on Moorhouse Ave said he heard a loud bang and looked out his window to see a cloud of dust.
“There was just a massive cloud of dust so we knew something had gone wrong. It was about 7.40pm,” Craig Ashby told the Herald.
“We were sitting inside at home and heard this loud bang and just though, what the hell was that?