Search efforts will continue today for a missing swimmer at Karioitahi Beach.
Police were contacted at about 6.30pm on Saturday night, after five people got into trouble in the water.
"Four people exited the water safely, one in serious but stable condition, and the others in minor condition," Acting Inspector Garry Larsen, Auckland Metro Groups says.
"Unfortunately, one person did not resurface.
"The Police Eagle helicopter assisted in conducting searches of the area; however, the fifth person was not located."
He says a range of resources deployed back to the area yesterday alongside the Auckland Police Maritime Unit, including Surf Lifesaving New Zealand and Coastguard.
Unfortunately, the swimmer remains unaccounted for.
Acting Inspector Larsen says the search will resume today with support from other agencies.
"Our efforts are focused on locating the swimmer and this will continue across the day.
"I know this person's friends are quite shaken up by the events that unfolded, and we are ensuring there is support in place for them."
Further updates will be provided when available.
