The White House and FBI say New Jersey’s string of mystery drones might actually be manned aircraft and “inaccurate sightings.” That new detail came in an official statement from the agencies and a news conference Thursday with national security communications adviser John Kirby,

The White House, FBI and Homeland Security said on Thursday they had no evidence that drone sightings reported in New Jersey posed national security or safety threats, despite concerns raised by lawmakers.

Officials sound alarm over reports of the strange sights—seen over New Jersey, New York, Maryland and Pennsylvania—with one asking for a “limited state of emergency.”