A toxic smoke warning has been issued for the inner west as it's rocked by explosions from a massive fire factory in West Footscray.
Residents in Brooklyn, Kingsville, Tottenham, West Footscray, Altona North, Braybrook, Footscray, South Kingsville, Spotswood, Sunshine and Yarraville should close their doors and windows, and turn off their heating and air conditioning.
A hundred firefighters have spent the last few hours battling the blaze on Somerville Road, which is sending flames shooting up into the air.
It started just after 5am on Thursday morning.
Somerville Road and Paramount Road are both closed in both directions.
The MFB has confirmed the structure, which has partially collapsed, contains asbestos. It's in talks with Maribyrnong City Council to determine what's inside the mixed storage facility.
MFB Incident Controller Ken Brown says the firefight will likely take all morning.
"We're still pulling resources in," he said. "We're looking at about a hundred firefighters and 20 trucks. This will burn for a number of hours yet."
While Chris Miller from VicRoads is urging drivers to delay travel in the area or take an alternate route.
"If you must be in the area make sure you keep your windows closed [and] set your air conditioning to recirculation."
Cassie is a few blocks away in Yarraville, and she says it was certainly a dramatic wake-up call.
"Mostly just explosions and occasionally some flames shooting up in the air," she said. "And a lot, a lot of black smoke. The sky downwind is completely black."