As reports have swirled over sightings of drones in the skies over New York and New Jersey, one New Jersey mayor said the drones may be searching for missing “radioactive material,” but the theory he referenced is less alarming than it seems.

Federal officials have downplayed the threat the reported drones may pose, but Belleville, New Jersey, Mayor Michael Melham suggested to Fox 5 New York on Tuesday that the alleged drones, which have captured national attention, could be looking for missing radioactive material.