On the heels of the Transportation Security Agency’s announcement that uncharged electronic devices will be banned from certain international flights, security agents found a knife concealed inside of a passenger’s shoe Sunday morning.

During a standard security check at Detroit Metropolitan Airport in Romulus, Michigan, TSA agents found that a man had concealed a knife in the sole of his Rockport shoe. The TSA said that airport police took possession of the knife and arrested the unidentified man. The TSA points out that the knife should have been put in checked luggage.

According to the TSA website, box cutters, ice axes/ice picks, knives, meat cleavers, sabers and swords all need to be in checked baggage. Likewise, axes, hatchets, cattle prods, crowbars, hammers, drills, billy clubs, brass knuckles, night sticks, nunchucks, stun guns/shocking devices and throwing stars must also be checked. Snow globes are allowed in the cabin.

.Man caught trying to bring knife inside shoe lining at Detroit airport #aviationsecurity http://t.co/gf7SaXDuNk pic.twitter.com/CfPvFIAMsq

— Daniel Melendez (@danielM1960) July 8, 2014

Why does Detroit get the weirdos in our airport? First, the undies bomber and now someone MacGyver-ing their shoe to hide a knife.

— Genevieve (@polishedgrad) July 8, 2014

The knife find is perhaps indicative of a larger initiative of heightened security aligned with the aforementioned policy on uncharged electronic devices. The TSA announced Sunday that it will not allow cellphones or other electronics on U.S.-bound planes originating at some international airports if the devices are not charged up. The ban is part of tighter security measures surrounding Yemen-based al Qaeda in the Arabian Peninsula and the Islamist Nusra Front, al Qaeda’s affiliate in Syria, seeking to blow up a jetliner.

Passengers will be required to power up their devices at certain security checkpoints, to assure that the encasement is not a hidden bomb. Laptops and tablets will be included in the checks, and U.S. officials have stated that security officers will be paying closer attention to passengers’ shoes, as they can be used as bombs as well.

Image via Twitter