An American man accidentally killed himself while trying to secure his home from theft in Van Buren, Maine.
The 65-year-old man was hit by a live bullet after an automatic rifle was fired when he tried to open the door.
He tested the device himself to make sure he was hit by a bullet that killed him.
When the police examined the rest of the house, several rifles were found in the same way, prompting security officers to hire experts to dismantle them.
Police said the man had died despite doctors' attempts to save him.