Four trucks have been destroyed in a south Auckland fire which authorities are treating as suspicious.
About a dozens crews and more than 50 firefighters from south Auckland and further afield were at one stage at the truck storage yard on Spartan Rd in Takanini.
A Fire Service spokesman said emergency services received multiple calls about 10pm and gained entrance to the gated compound.
"[The trucks] are outside a building inside a compound," the spokesman said.
The building was not affected but the trucks were destroyed. The blaze was under control by about 11pm although crews remained at the scene to monitor and dampen down hot spots.