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BATON ROUGE, La. (WAFB/CNN) - A Louisiana man got a shock Wednesday when he found a live grenade in his yard. A landscaping crew discovered the grenade around the man's driveway.

As if finding a grenade in your yard wasn't odd enough, this one has apparently been there for a long time. It was a "pineapple grenade" from around the time of World War II.

Police were called in and set up a perimeter around the grenade. Traffic was shut down in both directions.

The decade's old explosive still worked though: authorities were able to detonate it safely.