A live World War II military round has been destroyed after it was found on a popular Cape Cod beach.

A fisherman discovered the device in the sand at Marconi Beach in Wellfleet, Mass., at about 3 p.m. Wednesday and alerted authorities.

The state police bomb squad responded, and the 14-inch projectile was blown up on the beach at about 7 p.m.

Officials kept curious spectators about 1,000 feet away from the explosion to protect them from shrapnel.

Sgt. Jerry Galizio of the Massachusetts State Police bomb squad told the Cape Cod Times that the military used area beaches as practice ranges during World War II, and it's not uncommon for ordnance to be found even to this day.

Galizio said the color of the smoke indicated the military projectile was live when it was detonated because the explosives the bomb squad use typically create white smoke, according to the newspaper. 

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The Associated Press contributed to this report.