Auckland police have revealed that Robert Hunt, the 55-year-old gay stamp collector found dead at his Ellerslie home on Saturday, died after a frenzied attack with a sharp instrument. Detective Senior Sergeant Julian Rinckes says Hunt suffered multiple wounds, probably from a knife. He will not comment on whether Mr Hunt's flatmate – who discovered the body – is a suspect. Police want to hear from anyone who saw a red Honda Integra being driven round Auckland between Friday and Saturday nights without a rear number plate. The vehicle has now been examined and blood has been found inside, but it has not yet been identified. Detectives are awaiting further forensic testing of the car. Police are making enquiries into Mr Hunt's background and private life in order to establish a motive for the attack.