Auckland police are still looking for the person who let off a home-made bomb on the North Shore yesterday.
Firefighters were called to Forrest Hill, after an explosion was heard around 1.45pm.
They found an explosive device made from a fire extinguisher had gone off in a bush area.
North Shore police say this kind of device can kill someone if they are close enough.
A spokesman says the fact they don't know how long it was there, means it is difficult to locate the person responsible.
