Police confirm that there has been a third blast at the Pike River mine today.
The blast occurred at 3.39pm. It was much smaller than the previous two blasts and lasted around 20 seconds.
Superintendent Gary Knowles said no one was injured in the blast.
"This will not impede the recovery work we are doing at the site and we are continuing with our forward planning as scheduled," he said.
The blast occurred as emergency services representatives gathered at the mine site. The group was some kilometres away from the mine portal at the time and not in any danger.
Police media contact in Greymouth: 027 501 5742