Police have cordoned off a canister found on a beach.
A 100 metre cordon has been set up around the canister on Littlehampton beach, near East Beach Café.
West Sussex Fire and Rescue Service were called shortly after 5pm and a spokesman said it is not yet known if it is military ordnance.
A Sussex Police spokesman said it is not being treated as criminal and believe it may have been washed up or unearthed on the beach.
Emergency services are still at the scene.
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