Police have declined to name the owner of the car and it's association to claims of the alleged drug-related shooting.
The spokeswoman was not prepared to confirm what type of firearm was used for fear of jeopardising the investigation.
The house where Mr Whatuira's body was found was also the scene of a stabbing on October 23 last year, where a man received abdomen and face wounds, while another man suffered injuries to his hand.