Auckland Mayor Phil Goff is in hospital after undergoing unplanned surgery yesterday.
A spokesperson from the mayor's office said Goff had an angioplasty yesterday in Auckland Hospital.
He is set to remain in hospital for another day or two and is not expected back at work until the following week.
Deputy Mayor Bill Cashmore will be stepping in for some of the Mayor's duties during his absence.
An angioplasty aims to widen narrowed or obstructed arteries or veins.