"He was an amazing guy, gregarious, fun and so full of life," Holt told the Herald on Sunday.
Meanwhile, tributes were paid to two Newcastle United fans on their way to New Zealand to watch their team play pre-season games.
Newcastle United released a statement saying John Alder and Liam Sweeney were familiar faces at every away game the club played.
"John was a lifelong supporter and a familiar sight in the stands for almost half a century, having barely missed a single game in that time. Liam will be known to many fans during his time volunteering as a steward on supporters' buses to away games."
Manager Alan Pardew said in the statement that he and all the players were "deeply shocked and saddened by this terrible news".
"Our hearts go out to their families and friends."
Newcastle United said the players and managers would wear black arm bands for their games against Sydney FC and the Wellington Phoenix in Dunedin and Wellington next week.