Firefighters were kept busy with Guy Fawkes over the weekend.

There were nine probable fireworks-related callouts in the Bay of Plenty, with all but one being overnight Sunday, a Fire and Emergency New Zealand spokesman said.

He said the callouts included people lighting fireworks from a vehicle in Rotorua causing a grass fire, and a small garden fire in Whakatāne.

He said there was also a hedge on fire in Tauranga as well as a fire in the sand dunes at Pāpāmoa Beach which was possibly caused by fireworks.

The spokesman did not have the details for all the incidents.

Fireworks were the cause of a house fire in the Auckland suburb of Mt Roskill Sunday with the flames spreading through most of the property by the time firefighters arrived.