A Ports of Auckland boat is under investigation over the death of a man whose body which was found missing a leg, floating in the sea yesterday by ferry passengers.
Police believe it is the body of a missing male swimmer who failed to return from a regular swim off Narrow Neck Beach on Thursday afternoon.
Ports of Auckland CEO Tony Gibson has confirmed that one of the company's pilot boats is under investigation over the death.
"I am extremely upset that one of our pilot boats may have been involved in the death of a swimmer," Mr Gibson said in a statement this morning.
"I understand the pain this will have caused and I offer the family and friends of the swimmer my deepest sympathies for their tragic loss.
"Ports of Auckland will be co-operating fully with the authorities as this investigation continues."
Police retrieved the body from Mairangi Bay and are investigating the involvement of a boat which they say has been "identified, located and examined."
"We can confirm that we do not believe a shark has been involved," a police spokesperson told 1 NEWS.
A passenger on board a 360 Discovery Cruise spotted the body about three kilometres off the coast of Mairangi Bay, on Auckland's North Shore yesterday afternoon, NZ Herald reports.
The skipper of the vessel stopped the cruise and waited until maritime police arrived.
Police say an investigation is ongoing.