Christchurch Mayor Bob Parker says that this earthquake felt as violent as the one in September.
Jane Patterson has been at the Beehive bunker getting a civil defence update.
Jim Palmer is the CEO of the Waimakariri District Council.
Hewitt Humphrey summarises news of the Canterbury Earthquake.
David Miller is from Christchurch Civil Defence.
The mayor of Christchurch has declared a local state of emergency.
Barry Saunders is at the epicentre of the earthquake - Lyttleton.
Labour Party leader Phil Goff is outside the Pyne Gould building - where people are trapped inside.
James Thompson is the Operations Manager for Civil Defence Christchurch.
Bridget Mills is in Latimer Square at a triage centre.
Dave Cliff is the Police Superintendent.
Hewitt Humphrey summarises news of the Canterbury Earthquake.
John Townend is a seismologist for GNS; and an Associate Professor at the School of Geography, Environment and Earth Sciences.
Update of the Canterbury Earthquake.
Denise Torrey is the principal of Summerfield School in the south of Christchurch.
John Carter, Minister for Civil Defence gives reporters in Wellington a briefing.
Explosives have been shaking Christchurch's QE2 sports centre today to simulate a magnitude 4 earthquake.
Public bus tours of Christchurch's red zone will start off with a warning that the passengers could be trapped by an earthquake and may not make it out alive.
The acting Vice Chancellor, Professor Ian Town, speaks to Checkpoint about the massive losses sustained because of the Christchurch earthquake.
An additional 300 people could have died in the February 22nd earthquake in Christchurch, if it wasn't for the earlier quake in September.
A Christchurch businessman has told the Earthquake Royal Commission the city council was a nightmare to deal with when he was trying to strengthen his building before the September quake.
The Green Party has spelt out how it would impose an earthquake levy on higher earning taxpayers, to fund the rebuild of Christchurch, if it becomes part of the next Government.
The Christchurch City Council has been questioned over whether it was playing russian roulette with its citizens with its rules on earthquake prone buildings.
Sarah McMullan reviews 'When A City Falls', a documentary about the Christchurch earthquakes.
Surviors of the collapsed Pyne Gould building in Christchurch where 18 people died in February's earthquake have today relived their experiences on that day.
Rolleston is a town in the Selwyn District of Canterbury, just outside the Christchurch City boundary. It was close to the epicenter of the September earthquake last year, but suffered little damage because it sits on very stable rock.
An American engineer has told the Canterbury Earthquakes Royal Commission he was shocked at the failure of builders to properly fix the floors of the PGC building to its walls.
More now on the charter schools which the Government is planning to trial in South Auckland and in some parts of Christchurch, which were hit badly in the earthquake.
More than 170 people employed by the Christchurch City Council have been told their jobs are gone as a result of the earthquake in February.
Council rates in Christchurch city will continue to be calculated using the 2007 house valuations for up to two more years, allowing time for the earthquake's impact on property prices to be assessed.