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.

New Jersey residents have been feeling uneasy after a large number of what appear to be mysterious drones have been spotted flying through the sky over the past few weeks. Residents have described the sightings to PIX11 News as “unnerving” and “creepy” and want an explanation.

These are just a few of the theories being floated about the witness sightings of large, mysterious drones flying over New Jersey in recent weeks, spooking residents and prompting state lawmakers to demand answers from Washington about where the drones are coming from and if they pose any harm.