I hesitate to jump to conclusions until we have more information, but all accounts I’ve seen so far indicate that this Australian couple, Jolie King and Mark Firkin, were arrested in Iran after they were caught flying a drone near Tehran, possibly close to a military base. They’d been traveling in a Toyota Land Cruiser and blogging their journey until communication stopped in July. Details have just emerged, including in the Guardian, here.
Need I comment on the inadvisability of anyone from a Western power flying a drone in a country at odds with Western powers?