A fire burning in the suburb is causing smoke over roads and reduced visibility.
The Department of Fire and Emergency Services has issued a smoke alert for Mardella in the Shire of Serpentine Jarrahdale.
A fire burning in the area has caused a large amount of smoke which is impacting the roads.
DFES said motorists in the area should drive slowly and be extremely careful when on the roads.
No road closures are in place.
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