The trailer of a truck carrying rubbish has caught fire, resulting in the closure of State Highway 3 north of Bulls.

Police and Fire and Emergency NZ were notified of the fire near Brightwell Rd on SH3 about 1.15pm on Monday.

Fire and Emergency Central shift manager Murray Dunbar said a 12m trailer containing rubbish had caught fire.

“The truck is not involved.”

Police said traffic was being diverted via SH1 and motorists should expect delays.

There are no reports of injuries.

Dunbar said two fire trucks from Bulls and a tanker from Marton were extinguishing the fire.

Fin Ocheduszko Brown is a multimedia journalist based in Whanganui.