Police have released a picture of the hand grenade, made safe in a controlled explosion this morning.
An army explosives expert came to the Island and dealt with the device in a field near Johnny Watterson's Lane, on the outskirts of Douglas.
It's understood the grenade was found in the possession of a small boy at a property in Willaston yesterday, but it's being stressed there was no danger to the public at any time.
It was originally reported the explosion took place yesterday.
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