The public frustration over the lack of answers hit a peak on Wednesday when US Rep. Jeff Van Drew (R, NJ) claimed “highly reliable” sources told him the drones could be coming from an Iranian mothership stationed offshore — a claim the Pentagon quickly denied, without offering any fruther insight.

The U.S. government has no evidence that drone sightings reported in New Jersey pose a national security or a public safety threat, White House national security spokesperson John Kirby said on Thursday.