More than 50 firefighters and two helicopters were called in to battle a major fire that broke out at an apartment complex in Melbourne's east on Friday night.
One firefighter was injured in the operation, and had to be treated by paramedics at the scene.
![Dozens of firefighters battled to bring the blaze under control.](/web/20170204074119im_/http://www.theage.com.au/content/dam/images/g/u/5/e/a/m/image.related.articleLeadwide.620x349.gu5ea2.png/1486130456039.jpg)
The Metropolitan Fire Brigade said it received several emergency calls shortly after 10pm about the fire in the block of units that was under construction on Dunstan Street, Clayton.
"The fire was threatening to catch onto a two-storey block of six units next door to the building on fire," an MFB official said.
![A firefighter was injured in the operation.](/web/20170204074119im_/http://www.theage.com.au/content/dam/images/g/u/5/e/a/c/image.related.articleLeadwide.620x349.gu5ea2.png/1486130456039.jpg)
"Quick work by the MFB and CFA firefighters prevented further damage to the next-door units, resulting in only external damage and a few broken windows."
Damage to the building under construction was "extensive" and estimated to be at least $100,000.
Fire crews will remain at the scene of the blaze overnight, and authorities will call in fire investigators in the morning to determine the cause of the fire.