The Colorado Department of Public Safety says it is scaling back its investigation into reports of unexplained drone sightings after finding zero evidence that groups of large unmanned aircraft are flying strange patterns in the night sky.
“To date, CDPS has confirmed no incidents involving criminal activity, nor have investigations substantiated reports of suspicious or illegal drone activity,” the agency said Monday in a statement.
Reports of drone fleets crisscrossing northeast Colorado and southwest Nebraska at night began in mid-December, captivating the public and prompting local officals to form a drone task force. Federal authorities including the FBI and FAA joined in. Multiple private companies and military agencies denied the drones were theirs. Colorado officials turned their high-tech wildfire surveillance aircraft and a Colorado State Patrol plane into drone hunters, but every search has apparently come up empty.