Weymouth Beach was evacuated after a member of the public found an ‘unknown object’ in the sea. After Police put in place a security cordon, an Explosive Ordnance Disposal (EOD) team arrived to assess the item.
It was subsequently destroyed on the beach in a controlled explosion.
See: https://www.dorsetecho.co.uk/news/19642590.watch-unexploded-device-blown-weymouth-beach/