Earlier this week, United States and United Kingdom officials announced new restrictions for airline passengers from eight Middle Eastern countries, forbidding passengers to carry electronics larger than a smartphone into an airplane cabin. According to a security source, the ban was prompted in part by a plot involving explosives hidden in a fake iPad.

The Guardian reports that the bans were “were not the result of a single specific incident but a combination of factors,” and that one of those factors was a plot to use a fake iPad to bring explosives onboard a plane. Further details, such as when the bombing would be carried out, the group behind it, or the nation from which the plan originated, were not divulged.

This delivery method is not unprecedented. In February 2016, a Somali plane was able to land after a passenger detonated a bomb, possibly hidden in a laptop, shortly after takeoff. The Guardian notes that a bomb placed in a passenger cabin can have more of an impact than one placed in the cargo hold, because the would-be bomber could position the explosive against a door or window.

The ban implemented by the US Department of Homeland Security includes laptops, tablets, e-readers, cameras, portable DVD players, and handheld gaming devices, and will require passengers to check those items with their baggage. At the time, DHS explained its rationale after “evaluated intelligence indicates that terrorist groups continue to target commercial aviation, to include smuggling explosive devices in various consumer items.” The US ban affects inbound, direct flights from Jordan, Egypt, Turkey, Saudi Arabia, Morocco, Qatar, Kuwait, and the United Arab Emirates, while the UK ban affects flights from Egypt, Jordan, Lebanon, Saudi Arabia, Tunisia, and Turkey.