Unexploded United States Navy flares have been detonated after they were found on a popular beach.
The 18-inch flares, washed up on Skegness beachin Lincolnshire, believed to have been discharged from Fighter planes on exercise last month.
Yarmouth Coastguard said others 'may appear' on adjacent beaches.
A spokesmansaid the flares were 'extremely dangerous'. Warning signs have been put in place.