A serious police incident is unfolding in Mosman Park.
Police have confirmed they are attending the incident at a property in Mott Close and have urged members of the public to stay away from the area.
However, WA Police say they do not believe there are any public safety concerns.
St Johns WA has confirmed five ambulance crews were called to the scene under priority one conditions at 8.29am.
All ambulance crews remain on scene and several streets in the area have been blocked off.
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Department of Fire and Emergency Services firefighters have not been called to the scene.
Police Commissioner Col Blanch and detective inspector Jessica Securo will be holding a press conference at 11.30am.
More to come.