Fire investigators have launched an investigation into a suspicious fire in South Auckland tonight.

Firefighters were called to a large blaze on Sandrine Avenue, Otara, just after 10pm.

A garage on the property was well ablaze when authorities arrived, northern fire communications spokeswoman Megan Ruru said.

"It's considered suspicious," Ms Ruru said.

Advertisement

There was no reports of injury and the property is understood to be currently vacant.