David Nyika has Gold Coast Commonwealth Games boxing gold medal from the Gold Coast games stolen from his car two weeks ago in Hamilton.
The 22-year-old won heavyweight gold at last month's Commonwealth Games, defeating Australian Jason Whateley. He defeated Kennedy St Pierre of Mauritius for the light heavyweight gold medal in Glasgow four years earlier.
He said he only realised when he went to surprise a young fan at their school and noticed that the medal and other items were missing from his car.
"At first I was quite embarrassed about it, but now I'm just angry," Nyika told Stuff.
"A kid dressed up as his hero, which happened to be me, for a mufti-day at school so I thought I'd surprise him and stop by with my medal. That's when I realised it was gone. I didn't notice until then.
"I just want the medal back. It's almost worthless to anyone but me, you know, so I really hope I can get it back.
"One of the best things about having the medal is being able to go to schools and show it to kids, and now I can't do that.
"I was pretty embarrassed about it, but people have made me realise that nobody has a right to go through your things, to steal your things.
"The police are doing a great job, and I'm confident they'll be able to track it down."