According to the NZ Herald, the explosions were carried out after the discovery of two abandoned backpacks at Britomart station.
Evacuation of people at the station itself was not made.
March 15 in New Zealand Christchurch shooting occurred in two mosques and near the hospital. Four people were detained, one of them is an Australian citizen.
40 people died, 50 injured. New Zealand Prime Minister Jasinda Ardern called the incident a terrorist attack.
Security level in New Zealand changed to high.