PLEASE HELP ELVIS IS STILL MISSING

The person who took Elvis to Auckland has found another cat he believes to be Elvis and is no longer looking for him. That cat was not neutered or microchipped so can't be Elvis. I don't live in Auckland and am unable to search myself. Any ideas or help who I could contact for assistance would be very gratefully accepted.

Black Male Cat. NEUTERED. MICROCHIPPED. Recently relocated from ChCh & unfortunately escaped. I'm not sure exactly which area in Auckland he actually went missing but believe it to be the Bucklands Beach area. Only has a few grey hairs on right side of chest which looks like a smudge. Will be very timid as been an inside only cat.

Any help would be greatly appreciated. Thank you