Lockdown after 'suspicious device' washes up on beach

An exclusion zone of 100m has been established around the device while authorities examine it.

"Police ask members of the public to avoid the area," police said in a statement.

The Australian Defence Force has reportedly been notified with media outlets saying it appears to be a military device, possibly a torpedo.

Images posted on social media by locals indicate the object is rusty and been submerged for some time.