Authorities say that additional grenades were possibly sold by the same vendor over the summer and law enforcement is concerned the grenades purchased from the vendor may contain live explosives and could be hazardous to the public.

A statement from the ATF reads: “The grenades were thought to be ‘inert’ MK2 grenades, a style used during World War II. At the time of sale, neither the vendor nor buyer(s) believed the grenades to be functioning or hazardous.”

Source: LADBIBLE