A person has been rushed to hospital in a critical condition after a water emergency at Blockhouse Bay this morning.
Police say the person was found near the water's edge.
St John Ambulance said the alarm was raised at 9.09am after a "water incident" in Endeavour St, Blockhouse Bay.
"One rapid response vehicle and two ambulances responded to the scene to treat then transport one patient in a critical condition to Auckland City Hospital," said a spokesperson.
Police were also involved with the Eagle helicopter scouring the bay and surrounding reserve as the emergency unfolded.
A police spokesperson said inquiries were in their very early stages and no further information was available at this stage.
Photos at the scene shows shallow water in the bay as the tide goes out.
Nearby residents reported hearing the wailing of sirens heading to the quiet reserve as the emergency unfolded earlier today.
Source of the "really unpleasant" noise has been identified, but a fix is some time away.