''The police were immediately alerted and they recovered the vehicle, which was returned undamaged. The patient was returned to the hospital safely,'' he said.
A chilly bin in the car had a Covid-19 swab in it but had not been tampered with. The recovered swab was delivered to the laboratory.
The staff member involved was being supported and returned to work on Friday.
The circumstances of the event, which Chamberlain described as ''extraordinarily rare'', were being investigated.
Chamberlain said he was confident there was no risk to patient or staff safety.
Senior Sergeant Brain Swann of Northland police said the man and the vehicle were located at the man's home a short time later.
He confirmed the swab was recovered and had not been interfered with.
No decision had been made as to whether the man would face charges.
The good news for all concerned — including the patient who was tested for Covid-19 — is that the swab returned a negative result.