“While there is currently nothing to indicate any foul play has taken place, we still need to speak with the woman who stopped to speak with the man,” he said.
The man collapsed nearby on Williamson Ave, near the intersection with Grosvenor St, about 8.45am that same day.
He remains in Auckland City Hospital in a critical condition.
Officers have made inquiries around Turangi Rd but have been unable to track down the woman.
Baber acknowledged others who had contacted police to help with their inquiries.
Anyone with information was asked to contact police via the 105 phone service, quoting file number 230504/0360.