A Stanford professor is out on bail after he was arrested last week at Los Angeles International Airport for allegedly having a grenade in his luggage.

Gary Walter Cox says after the recent deaths of his parents, he was cleaning out his childhood home in Southern California, and had forgotten some items he packed in his carry-on luggage included the World-War-Two era souvenir.

He was arrested after screeners found the grenade when he was trying to board a flight home to San Jose.

The political science professor said police told him the charge will be dropped