Second major 6.0 aftershock hits Christchurch
Several people have been confirmed injured in a swarm of earthquakes that have struck Christchurch this afternoon, with six shakes since 1pm causing damage all around the city.
The largest earthquake, a 6.0, struck at about 2.20pm.
The first shake hit at 1pm and was a magnitude 5.5 quake, but has been eclipsed by the larger event.
It was felt as far away as Wellington and Invercargill and has seen Christchurch Airport evacuated, with reports that one runway may have been damaged in the shakes.
Fire Service spokesman Ian Lynn said a bridge has reportedly come down following the magnitude 6.0 quake - believed to possibly be on Gayhurst Road, Avonside.
He said there have been further callouts, mostly for broken water mains.
"This place is going mad."
Police are evacuating the central city red zone after reports of a possible gas leak; and the Old Waimakariri bridge, Moorhouse Ave overbridge, Gloucester/Gayhurst bridge and Anzac Ave bridge are all closed.