"It is devastating to learn of the death of a cyclist in our city today. My thoughts go immediately to family and to friends and to all those involved in this tragic incident," she wrote in a social media post.
A St John spokesperson said they responded to the crash with one ambulance and a manager around 7.59am.
However, they were not required for transportation, they said.
The managing director of Semco Group, Junior Semenoff, said he was on his way from their business in Auckland to the scene of the crash in Hamilton.
He said the driver of the truck was doing their normal trade deliveries at the time of the accident.
Semco Group is a family-owned and operated trucking company with depots in Auckland and Whangarei.