Crimdon Dene beach: Dozens of WWII grenades found at UK beach after explosion leaves sunbather with burns

Police are urging members of the public to remain vigilant after dozens of WWII explosive devices were found in the sand at a UK beach.

Emergency services were first notified of the discovery after one of the grenades was been “set alight”, leaving an unsuspecting sunbather with burns.

“Late this morning, Tuesday 7th April, emergency services were called to Crimdon Dene beach where a quantity of what is believed to be WW2 ordnance had been discovered,” Cleveland Police said in a statement.

“The items had been set alight; a member of the public sustained what are thought to be minor burns and is receiving medical treatment.”

In a later statement, Cleveland Police said the explosive devices are believed to be SIPs — Self-igniting phosphorus grenades that were used during WWII.

Typically the devices consist of a glass bottle filled with a mixture of white phosphorus, benzene, water, and a rubber strip.

Soldiers would throw the SIPs which would smash, causing an explosion once the chemicals made contact with the air.

Police and explosive experts performed a controlled explosion to dispose of the dangerous explosives. The area remains cordoned off until police are confident it is clear.

Members of the public are urged to steer clear of the area due to the highly dangerous nature of the devices.

“We would ask people to stay away from the area while this operation is in progress and we thank the public again for their assistance and co-operation,” police said.

They added that anyone who comes across similar items should immediately contact police.

“Again, we urge anyone who ever comes across similar items of ordnance or items/substances of unknown origin to contact police immediately with a description of the item/s and their location so we can take appropriate action.”

Although it is believed there is no wider risk to the public, a police cordon remains in place until further notice.