(CNN) They came out of nowhere. And while authorities have said the drones flying in rural Colorado and Nebraska don't appear malicious, there's not a whole lot more they know about them. But they are looking for the vehicle that may be controlling the aircraft.

Last week, Colorado authorities said deputies had spotted more than a dozen unmanned drones flying in the northeast part of the state.

In a post Monday, the Phillips County Sheriff's Office in Holyoke, Colorado, said local, state and federal authorities held a meeting over the "drone issue," and are now asking for the public's assistance in finding the command vehicle.

"We are looking for a closed box trailer with antennas or a large van that does not belong in the area," the sheriff's office said

The sheriff's office added they have organized a task force. CNN has reached out for further comment.

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