CHEYENNE, Wyo. (AP) — An official investigation into reports of large drones flying in groups over the western U.S. plains in the hours after sunset has confirmed nothing illegal or out of the ordinary.

The Colorado Department of Public Safety said Tuesday it will scale back flights of a heat-detecting plane to try to corroborate reports as they're made but will continue to look into new reports.

Law enforcement agencies in eastern Colorado and much of Nebraska have been taking calls about unusual drone sightings for over a month.

Drones as big as cars have been said to fly back and forth after sundown. 

In other news

SCOTTSBLUFF, Neb. (AP) — Scottsbluff's former city manager likely will temporarily return to oversee city operations while officials look to permanently fill the position.The City Council voted Thursday to authorize current City Manager Nathan Johnson to make an offer to former City Manager …

KEARNEY, Neb. (AP) — Officials have approved a permit that will allow a Hastings company to operate a gravel pit just east of Kearney despite objections from some neighbors.The Kearney City Council voted Tuesday night to grant a conditional use permit sought by Vontz Paving.Neighbors of the …

LEXINGTON, Neb. (AP) — The Nebraska State Patrol says three traffic stops along Interstate 80 in south-central Nebraska just hours apart netted thousands of dollars worth of drugs and fraudulent credit cards and led to the arrests of four people.

OMAHA, Neb. (AP) — Two men have been sent to prison for stealing a U.S. Postal Service truck in Grand Island while kidnapping its driver.Prosecutors say Sidney Britt was sentenced Wednesday in U.S. District Court in Omaha to 20 years.Joshua Britt was given 11 years and three months in prison…