FBI investigates mysterious drones filling night sky in New Jersey that have 'unnerved' residents

Large drones have been hovering in formation over northern New Jersey, officials said Monday, leading to "unnerved" residents wondering what's behind these bright, unidentified flying objects appearing almost every night in the sky.

The FBI and Morris County Sheriff's Department are actively investigating the aerial phenomenon that's been an annoyance, but not yet any kind of safety threat, authorities said. ---More...