The host of online radio station The Platform informed listeners that he would not appear this morning “due to circumstances beyond my control”.
“Please accept my apologies, normal service will resume soon,” he wrote on Twitter.
This morning he said his absence was due to a “minor” heart attack.
“I am well looked after by the wonderful people at Wellington hospital,” he wrote.
‘Keep an eye on those close to you. I’ll be right back.’
In an earlier tweet, Plunket, 57, had noted how Wellington Hospital seemed to function.
“Strange to have gone from talking about a stressed health system in a matter of hours,” he said.
“Wellington Hospital A&E actually as calm and efficient as I’ve ever seen it. I’ll update later, but nothing too serious.”
Several listeners sent the radio host their good wishes on social media, urging him to recover quickly.
Plunket started The Platform last year after leaving Magic Talk.
He is a former presenter of RNZ’s Morning Report and has worked as a TV reporter.