Police are investigating how a fake bomb was allowed on a cargo flight from London without being detected.
The device was hidden in a cake box and put in a parcel on a UPS plane like the one in the picture.
The pretend bomb had wires, a timer and a detonator but there were no explosives in it.
It travelled all the way to Turkey without being discovered and if it had been real it could have done a lot of damage.
A man's been arrested but police say they don't think he's a terrorist.