It appears Destiny Church leader Brian Tamaki has been approached by police for naming the baby at the centre of a court case over a blood transfusion.
A video posted to Tamaki's Facebook page shows two police officers outside his house, asking to talk to him.
"We're here to have a chat to him about a Facebook post he put up recently," one of the officers said.
The video post claims the officers wanted to talk to Tamaki, who was not home, about using the baby's name when suppression orders prevented him being identified.
Police said they could not comment on the situation for privacy reasons, but said they will follow up suppression breaches reported to them or referred to police by the court.
The baby has automatic name suppression.
The baby whose parents did not want him to receive blood from people who may have had the Covid-19 vaccine underwent urgent heart surgery at Starship Hospital last Friday.
Earlier last week the baby was placed under the guardianship of the High Court until the completion of the surgery and post-operative recovery.
Te Whatu Ora had asked the High Court to take guardianship of the baby to allow the surgery to go ahead with blood from the blood service.