Witnesses are being asked to come forward following a series of suspicious rural fires west of Hamilton early this morning.
Emergency services were first called to a blaze at a property on Old Mountain Rd near Te Pahu about 3.30am.
"A local man woke around this time and noticed the light from a fire several kilometres up the road," said Senior Sergeant Dave Simes.
"Driving to investigate, the man confirmed the light was from a fire, and called 111."
On arrival, firefighters noticed five separate blazes burning along the left side of Old Mountain Rd, all within six kilometres of the intersection with Te Pahu Rd.