Boxes of live Royal Navy ammunition have been discovered on two beaches in East Cornwall.
The ammo includes rounds of 20mm armour piercing bullets, and have been found at two different locations.
It is reported to have washed up on Porthbeor beach in Roseland and on Vault Beach in Gorran Havern.
The police say they have dealt with the ammunition.
Inspector Rick Milburn said:
“We are currently liaising with the EOD and Royal Navy in this matter. Over the weekend, we received two reports that ammunition was located on Porthbeor beach in Roseland and on Vault Beach in Gorran Haven.
“We informed the Explosive Ordnance Disposal (EOD) unit who handled the ammunition, which is believed to be highly dangerous.
“If located, we would ask the public not to approach these boxes but to contact police right away.
“Public safety is our priority and we have attached photographs of the boxes of ammunition. Anyone who sees anything similar washed up on a beach is asked to contact the police.”
The Mevagissey Coastguard have also issued advice:
"We’d urge parents to discuss this with their children, so if they find similar items on our beaches, they know not to touch them and report it immediately."
A Royal Navy spokesperson said:
“The Royal Navy’s Southern Diving Unit removed unexploded ordnance at the request of Devon and Cornwall Police on April 14 and 15, and we are now supporting Devon and Cornwall Police to ascertain its origin.”
Cover picture: Mevagissey Coastguard