The FBI is investigating after large drones were spotted flying over central New Jersey over the last two weeks. The "cluster of what look to be drones and a possible fixed wing aircraft" have been recently sighted along the Raritan River, the FBI said.

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.