Taylor said it was fortunate there had been no injuries or loss of life as a result of the fires.
“The dry weather, and at times proximity to the Port Waikato township, causes significant concern and risk for the township.”
He said the fires occurred on January 11, February 9, February 17, February 26, twice on February 27 and March 4.
No arrests had been made at this stage of the investigation.
Anyone with information about those involved or who have witnessed suspicious activity around the time fires occurred is urged to report it to police via the 105 phone service using the reference number 250227/2905.
“If you see any suspicious activity occurring, please call police on 111,” Taylor said.