Two inert C4 demolition explosives were discovered in a carry-on bag of a passenger at the Honolulu International Airport in November, according to the TSA Blog.
The incident happened sometime between the beginning of the month and Nov. 14.
The Transportation Security Administration says its employees continue to find inert hand grenades and other weaponry on a weekly basis.
The TSA says if an item looks like a realistic bomb, grenade, mine or some other kind of explosive, it is prohibited whether it is real or not.
When these items are found at a checkpoint or in checked baggage, they can cause significant delays in checkpoint screening. While they may be novelty items, you cannot bring them on a plane. Click here to read more about why inert items cause problems.