White House National Security spokesman John Kirby said there's no evidence that the New Jersey drone sightings are the work for foreign adversaries.

Authorities have yet to identify the origin of the unmanned vehicles, which have been spotted hovering in Jersey skies since November.

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.