The exit to South Street southbound has been closed.
Main Roads have issued a warning for people travelling on Kwinana Freeway.
There is smoke covering both directions of the freeway at South Street, Leeming.
Emergency services are on site.
Main Roads said to use extreme caution if you're in the area.
#KwinanaFwy both directions at #SouthSt, Leeming - EXTREME CAUTION ADVISED - smoke over road #perthtraffic
— Main Roads WA (@Perth_Traffic) January 8, 2018
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