Holyoake would remain chief executive until an interim replacement could be appointed, Denyer said.
The chief executive sub-committee met on Wednesday to discuss the interim appointment.
Denyer earlier said in a statement he had valued Holyoake’s insight and advice over the past four years, and wished him well in his “future endeavours”.
“He has guided our council during a time of significant change, and I thank him for what he has achieved.”
The process to select a new chief executive would come as the council prepared for the local government elections in October.
Holyoake joined the council in July 2021 replacing Miriam Taris, who had held the chief executive role from 2014.
He took on the council’s top job after six years as chief executive at Tamaki Regeneration Company – the largest urban regeneration project in New Zealand.
At his welcome pōwhiri, he acknowledged the need to work with iwi and Māori representatives.
“I truly believe that partnership with Māori is the true way forward,” he told the meeting.
“John brought a lot of energy and new thinking to the sector, and challenged the status quo with a view to achieving better outcomes for the community.”
Originally from Rotorua, Holyoake has family ties to Te Puke and Welcome Bay, and being closer to his family was a key reason behind him taking on the leadership role, he previously told SunLive.
- LDR is local body journalism co-funded by RNZ and NZ On Air.